PUMY-P125VMA PUMY-P125VMA1 PUMY-P125YMA PUMY-P125YMA1

Transcription

1 SPLIT-TYPE, HEAT PMUP AIR CONDITIONERS 004 No.OC7 REVISED EDITION-B TECHNAL & SERVE MANUAL R407C Outdoor unit [Model name] PUMY-P5VMA PUMY-P5YMA [Service Ref.] PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5YMA Revision : PUMY-P5VMA is added in REVISED EDITION-B. 9-8.TEST POINT DIA- GRAM has been added in REVISED EDITION-B. Please void OC7 REVISED EDITION-A. CONTENTS. TECHNAL CHANGE. SAFETY PRECAUTION. OVERVIEW OF UNITS 5 4. SPECIFATIONS 8 5. DATA 0 6. OUTLINES AND DIMENSIONS 8 7. WIRING DIAGRAM 9 8. NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION 9. TROUBLESHOOTING 4 0. ELECTRAL WIRING 78. REFRIGERANT PIPING TASKS 8. DISASSEMBLY 86. PARTS LIST 9 OUTDOOR UNIT Model name indication

2 TECHNAL CHANGE OC7 REVISED EDITION-A PUMY-P5YMA PUMY-P5YMA. Addition of new function (Auto Change Over) PUMY-P5YMA : Not equipped PUMY-P5YMA : Equipped. Difference of operation switching logic for the outdoor output connector (CND) PUMY-P5YMA : CND - OPEN : Heating CLOSE : Cooling PUMY-P5YMA : CND - OPEN : Cooling CLOSE : Heating. Difference of the role of SW5- (function selection switch) PUMY-P5YMA : Fix the operation frequency ON : Fix OFF : Normal PUMY-P5YMA : Auto Change Over from Remote Controller ON : Enable OFF : Disable OC7 REVISED EDITION-B PUMY-P5VMA PUMY-P5VMA Partial Change on Electrical Wiring: Change of reactor (DCL). Only reactor (DCL,) are adopted. (Previously 4)

3 SAFETY PRECAUTION CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R407C Do not use the existing refrigerant piping. The old refrigerant and lubricant in the existing piping contains a large amount of chlorine which may cause the lubricant deterioration of the new unit. Use liquid refrigerant to charge the system. If gas refrigerant is used to seal the system, the composition of the refrigerant in the cylinder will change and performance may drop. Use low residual oil piping If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the lubricant will result. Store the piping to be used during installation indoors with keep both ends sealed until just before brazing. (Store elbows and other joints in a plastic bag.) If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and compressor trouble may result. Use ESTR, ETHER or HAB as the lubricant to coat flares and flange connection parts. If large amount of mineral oil enter, that can cause deterioration of refrigerant oil etc. Do not use a refrigerant other than R407C. If another refrigerant (R, etc.) is used, the chlorine in the refrigerant may cause the lubricant deterioration. Use a vacuum pump with a reverse flow check valve. The vacuum pump oil may flow back into the refrigerant cycle and cause the lubricant deterioration. Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released. [] Cautions for service After recovering the all refrigerant in the unit, proceed to working. Do not release refrigerant in the air. After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant. [] Refrigerant recharging () Refrigerant recharging process Direct charging from the cylinder. R407C cylinder are available on the market has a syphon pipe. Leave the syphon pipe cylinder standing and recharge it. (By liquid refrigerant) Unit Gravimeter () Recharge in refrigerant leakage case After recovering the all refrigerant in the unit, proceed to working. Do not release the refrigerant in the air. After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant.

4 [] Service tools Use the below service tools as exclusive tools for R407C refrigerant. No. Tool name Specifications Gauge manifold Only for R407C. Use the existing fitting SPECIFATIONS. (UNF7/6) Use high-tension side pressure of.4mpa G or over. Charge hose Only for R407C. Use pressure performance of 5.0MPa G or over. Electronic scale 4 Gas leak detector Use the detector for R4a or R407C. 5 Adapter for reverse flow check. Attach on vacuum pump. 6 Refrigerant charge base. 7 Refrigerant cylinder. For R407C Top of cylinder (Brown) Cylinder with syphon 8 Refrigerant recovery equipment. 4

5 OVERVIEW OF UNITS -. UNIT CONSTRUCTION Outdoor unit 5HP PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5YMA Indoor unit that can be connected Capacity Number of units Total system wide capacity Type 0~Type 5 ~8 units 50~0% of outdoor unit capacity Branching pipe components CMY-Y6-C-E CMY-Y64-C CMY-Y68 Branch header ( branches) Branch header (4 branches) Branch header (8 branches) CMY-S65 Multi distribution Piping on outdoor unit (5 branches) Model Capacity Cassette Ceiling Ceiling Ceiling mounted Wall Mounted Ceiling Floor standing 4-way flow -way flow -way flow Concealed built-in Suspended Exposed Concealed PLFY-P PLFY-P PMFY-P PEFY-P PDFY-P PKFY-P PCFY-P PFFY-P PFFY-P VKM-A 40VKM-A 50VKM-A 6VKM-A 80VAM-A 00VAM-A 5VAM-A 0VLMD-A 5VLMD-A VLMD-A 40VLMD-A 50VLMD-A 6VLMD-A 80VLMD-A 00VLMD-A 5VLMD-A 0VBM-A 5VBM-A VBM-A 40VBM-A 0VML-A / VMM-A 5VML-A / VMM-A VML-A / VMM-A 40VMH-A / VMM-A 50VMH-A / VMM-A 6VMH-A / VMM-A 7VMH-A / VMM-A 80VMH-A / VMM-A 00VMH-A / VMM-A 5VMH-A / VMM-A 0VM-A 5VM-A VM-A 40VM-A 50VM-A 6VM-A 7VM-A 80VM-A 00VM-A 5VM-A 0VAM-A 5VAM-A VGM-A 40VGM-A 50VGM-A 6VFM-A 00VFM-A 40VGM-A 6VGM-A 00VGM-A 5VGM-A 0VLEM-A 5VLEM-A VLEM-A 40VLEM-A 50VLEM-A 6VLEM-A 0VLRM-A 5VLRM-A VLRM-A 40VLRM-A 50VLRM-A 6VLRM-A Decorative panel Name M-NET remote controller MA remote controller Remote controller Model number Functions PAR-F7MEA-E A handy remote controller for use in conjunction with the Melans centralized management system. Addresses must be set. PAR-0MAA-E Addresses setting is not necessary. Only the indoor unit for MA remote controller (the end of model name is -A) can be used. 5

6 -. UNIT SPECIFATIONS () Outdoor Unit Capacity Service Ref. Cooling (kw) Heating (kw) Motor for compressor (kw) PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5YMA w Cooling / Heating capacity indicates the maximum value at operation under the following condition. w. Cooling Indoor : D.B. 7 C / W.B. 9.0 C Outdoor : D.B. 5 C Heating Indoor : D.B. 0 C Outdoor : D.B. 7 C / W.B. 6 C () Method for identifying MULTI-S model Indoor unit < When using Model 80 > Outdoor unit <When using model 5 > P L F Y - P 80 V AM - A PU M Y - P 5 V M A PAC type L : Ceiling cassette K : Wall-mounted type E : Hidden skylight type C : Ceiling suspended type M: Ceiling cassette type F : Floor standing type Refrigerant R407C/R commonness Frequency conversion controller NEW frequency converter one-to-many air conditioners (flexible design type) Indicates equivalent to Cooling capacity MA control AM } KM M M-NET KM control LMD Power supply V: Single phase V 50Hz 0V 60Hz Outdoor unit MULTI-S Frequency conversion controller Refrigerant R407C Indicates equivalent to Cooling capacity Sub-number M-NET control Power supply V: Single phase V 50Hz Y: -phase V 50Hz 80V 60Hz () Operating temperature range Indoor-side intake air temperature Outdoor-side intake air temperature Notes D.B. : Dry Bulb Temperature W.B. : Wet Bulb Temperature Cooling W.B. 5~4 C D.B. -5~46 C Heating D.B. 5~7 C W.B. -5~5.5 C 6

7 -. SYSTEM LAYOUT --. System layout One outdoor unit using branching connectors can be connected to a maximum of eight indoor units. Examples of a branching method Outdoor unit A B C D e First branch (branching connector) a indoor b indoor c indoor d indoor Notes on the connection of indoor and outdoor units Note: When the total capacity of indoor units exceeds the capacity of the outdoor unit (more than 00%), the rated power of each indoor unit will be less when they are running simultaneously. indoor 5 Indoor unit Indoor unit that can connected Available capacity of indoor unit Outdoor unit PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5YMA ~8 units Type 0 ~ Type 5 Total capacity of units that can be included system (50-0% of outdoor unit capacity) 6~6 --. Capacity for outdoor unit () Branching pipe Model CMY-Y6C-E CMY-Y64-C Branching connector CMY-Y68 CMY-S65 NUMBER OF BRANCHING POINTS () Examples of System Construction (All models) Total capacity of PIping method indoor units Outdoor unit Indoor units

8 4 SPECIFATIONS Standard performance Item Heating Cooling Service Ref. Rated Cooling capacity Rated power consumption Operating current Operating power factor Starting current Rated Heating capacity Rated power consumption Operating current Operating power factor Starting current Rated power supply External finish (Munsell colour-coded markings) Dimensions H o W o D (Note ) Heat exchanger type Compressor Fan Defrost method Pressure gauge Protection devices Noise level Weight Model Type o quantity Starting method Motor output Capacity control Daily cooling capacity Heater <crankcase> Refrigerating oil (Model) Type o quantity Airflow Motor output High pressure protection Compressor protection Blower protection Frequency converter circuit Gas Refrigerant pipe size Liquid Type o charge amount Refrigerant Control method Unit kw kw A % A kw kw A % A mm kw % Legal tons W L k/min(cfm) W db kg(lbs) [ mm [ mm kg Note : External dimensions in parentheses indicate the dimensions of protruding parts. Note : Rating conditions (JIS B 866) Cooling : Indoor : D.B. 7: W.B. 9: : Outdoor : D.B. 5: W.B. 4: Heating : Indoor : D.B. 0: : Outdoor : D.B. 7: W.B. 6: PUMY-P5VMA PUMY-P5VMA Single phase V 50Hz Molten-galvanized steel plate (with polyester coating), ivory white <5Y 8/> 80 o 00 o 50 (+0) Crossover fin EEV48FAM Fully enclosed type o Frequency converter start.5 Cooling 7-00% Heating 5-00%.9 (04Hz).4 (MEL) Propeller (direct) o 90(,77) 60 o Reverse cycle High pressure pressure sensor (.0MPa) Thermal switch Thermal switch Overheating, Over current protection 54 7(80) R407C o 8.5 Expansion valve 8

9 Standard performance Item Heating Cooling Service Ref. Rated Cooling capacity Rated power consumption Operating current Operating power factor Starting current Rated Heating capacity Rated power consumption Operating current Operating power factor Starting current Rated power supply External finish (Munsell colour-coded markings) Dimensions H o W o D (Note ) Heat exchanger type Compressor Fan Defrost method Pressure gauge Protection devices Noise level Weight Model Type o quantity Starting method Motor output Capacity control Daily cooling capacity Heater <crankcase> Refrigerating oil (Model) Type o quantity Airflow Motor output High pressure protection Compressor protection Blower protection Frequency converter circuit Gas Refrigerant pipe size Liquid Type o charge amount Refrigerant Control method Unit kw kw A % A kw kw A % A mm kw % Legal tons W L k/min(cfm) W db kg(lbs) [ mm [ mm kg Note : External dimensions in parentheses indicate the dimensions of protruding parts. Note : Rating conditions (JIS B 866) Cooling : Indoor : D.B. 7: W.B. 9: : Outdoor : D.B. 5: W.B. 4: Heating : Indoor : D.B. 0: : Outdoor : D.B. 7: W.B. 6: PUMY-P5YMA PUMY-P5YMA phase V 50Hz Molten-galvanized steel plate (with polyester coating), ivory white <5Y 8/> 80 o 00 o 50 (+0) Crossover fin EEV48FAK Fully enclosed type o Frequency converter start.5 Cooling 7-00% Heating 5-00%.9 (04Hz).4 (MEL) Propeller (direct) o 90(,77) 60 o Reverse cycle High pressure pressure sensor (.0MPa) Thermal switch Thermal switch Overheating, Over current protection 54 7(80) R407C o 8.5 Expansion valve 9

10 5 DATA 5-. COOLING AND HEATING CAPACITY AND CHARACTERISTS 5--. Method for obtaining system cooling and heating capacity: To obtain the system cooling and heating capacity and the electrical characteristics of the outdoor unit, first add up the ratings of all the indoor units connected to the outdoor unit (see table below), and then use this total to find the standard capacity with the help of the tables on page to 4. () Capacity of indoor unit Model Number for indoor unit Model 0 Model 5 Model Model 40 Model 50 Model 6 Model 7 Model 80 Model 00 Model 5 Model Capacity () Sample calculation System assembled from indoor and outdoor unit (in this example the total capacity of the indoor units is greater than that of the outdoor unit) Outdoor unit PUMY-P5YMA Indoor unit PKFY-P5VAM-A o, PLFY-P50VLMD-A o According to the conditions in, the total capacity of the indoor unit will be: 8 o + 56 o = 68 The following figures are obtained from the 68 total capacity row of the standard capacity table (page ): A Capacity (kw) Outdoor unit power consumption (kw) Outdoor unit current (A) Cooling Heating Cooling Heating Cooling Heating 4.60 B Method for obtaining the heating and cooling capacity of an indoor unit: () The capacity of each indoor unit (kw) = the capacity A(or B) o model capacity total model capacity of all indoor units () Sample calculation (using the system described above in 5--. () ): During cooling: The total model capacity of the indoor unit is:.8 o o =6.8kW Therefore, the capacity of PKFY-P5VAM-A and PLFY-P50VLMD-A will be calculated as follows by using the formula in 4--. (): Model 5=4.6 o Model 50=4.6 o =.4kW = 4.87kW During heating: The total model capacity of indoor unit is:. o + 6. o =9.0 Therefore, the capacity of PKFY-P5VAM-A and PLFY- P50VLMD-A will be calculated as follows by using the formula in 4--. (): Model 5=6. o Model 50=6. o =.75kW = 5.4kW 0

11 5-. STANDARD CAPACITY DIAGRAM 5--. PUMY-P5VMA, PUMY-P5VMA STANDARD CAPACITY DIAGRAM w Before calculating the sum of total capacity of indoor units, please convert the valve into the kw model capacity following the formula on page 0. w Total capacity of indoor units V, 50Hz Capacity (kw) Power consumption (kw) Current (A) Cooling Heating Cooling Heating Cooling Heating

12 5--. PUMY-P5VMA, PUMY-P5VMA STANDARD CAPACITY DIAGRAM w Before calculating the sum of total capacity of indoor units, please convert the valve into the kw model capacity following the formula on page 0. Total capacity of w indoor units V, 50Hzw Capacity (kw) Power consumption (kw) Current (A) Cooling Heating Cooling Heating Cooling Heating

13 5--. PUMY-P5YMA, PUMY-P5YMA STANDARD CAPACITY DIAGRAM w Before calculating the sum of total capacity of indoor units, please convert the valve into the kw model capacity following the formula on page 0. 45V, 50Hz Total capacity of Capacity (kw) Power consumption (kw) Current (A) w indoor units Cooling Heating Cooling Heating Cooling Heating

14 5--4. PUMY-P5YMA, PUMY-P5YMA STANDARD CAPACITY DIAGRAM w Before calculating the sum of total capacity of indoor units, please convert the valve into the kw model capacity following the formula on page 0. 45V, 50Hzw Total capacity of Capacity (kw) Power consumption (kw) Current (A) w indoor units Cooling Heating Cooling Heating Cooling Heating

15 5-. CORRECTING COOLING AND HEATING CAPACITY 5--. Correcting Changes in Air Conditions ()The performance curve charts (Figure, ) show the rated capacity (total capacity) under the stated conditions when standard length for piping (5m) is used. The rated power is derived from the capacity ratio and power ratio obtained for the indoor and outdoor intake temperatures at time. Standard conditions: Service Ref. PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5YMA Rated cooling capacity Indoor D.B. 7 C / W.B. 9 C Outdoor D.B. 5 C Rated heating capacity Indoor D.B. 0 C Outdoor D.B. 7 C / W.B. 6 C Use the rated capacity and rated power values given in the characteristics table for each indoor unit. The capacity is the single value on the side of the outdoor unit; the capacity on the sides of each indoor unit must be added to obtain the total capacity. ()The capacity of each indoor unit may be obtained by multiplying the total capacity obtained in () by the ratio between the individual capacity at the rated time and the total capacity at the rated time. Individual capacity under stated conditions = total capacity under the stated conditions o individual capacity at the rated time total capacity at the rated time ()Capacity correction factor curve Figure. PUMY-P5VMA PUMY-P5YMA PUMY-P5VMA PUMY-P5YMA Cooling performance curve Figure. PUMY-P5VMA PUMY-P5YMA PUMY-P5VMA PUMY-P5YMA Heating performance curve Cooling Capacity (ratio) INDOOR <W.B. :> Heating Capacity (ratio) INDOOR 0 <D.B. :> Cooling Power. consumption (ratio) INDOOR <W.B. :> Heating.4 Power consumption. (ratio) INDOOR <D.B. :> Outdoor <D.B. :> Outdoor <W.B. :> 5

16 5--. Correcting Capacity for Changes in the Length of Refrigerant Piping () During cooling, to obtain the ratio (and the equivalent piping length) of the outdoor units rated capacity and the total in-use indoor capacity, first find the capacity ratio corresponding to the standard piping length (5m) from Figures at first, and then multiply by the cooling capacity from Figure to obtain the actual capacity. () During heating, to find the equivalent piping length, first find the capacity ratio corresponding to standard piping length (5m) from Figure 4, and then multiply by the heating capacity from Figure to obtain the actual capacity. () Cooling capacity correction factor Figure. PUMY-P5VMA PUMY-P5VMA Cooling capacity correction curve PUMY-P5YMA PUMY-P5YMA.0 Total capacity for indoor unit Cooling Capacity (ratio) (50%) 94 (75%) 5 (00%) 6 (0%) piping equivaent length (m) () Heating capacity correction factor Figure 4. PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5YMA Heating capacity correction curve.0 Heating Capacity (ratio) piping equivaent length (m) () Method for Obtaining the Equivalent Piping Length Equivalent length for type 5 = (length of piping to farthest indoor unit) + (0.5 o number of bends in the piping) (m) Length of piping to farthest indoor unit: type m 5--. Correction of Heating Capacity for Frost and Defrosting If heating capacity has been reduced due to frost formation or defrosting, multiply the capacity by the appropriate correction factor from the following table to obtain the actual heating capacity. Correction factor diagram Outdoor Intake temperature (W.B. C) Correction factor

17 PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5YMA NOTCH SPL(dB) Hi 54 LINE OCTAVE BAND SOUND PRESSURE LEVEL, db (0 db = µbar) APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE BAND CENTER FREQUENCIES, Hz NC-70 NC-60 NC-50 NC-40 NC-0 NC-0 MROPHONE m m 7

18 6 OUTLINES AND DIMENSIONS OUTDOOR UNITS PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5YMA Air intake Air outlet Terminal block for transmission Optional parts (base branching pipe) installation hole Terminal block for central control Terminal block for power source Handle for moving Optional parts installation hole Side air intake Handle for moving Rear air intake Gas refrigerant-pipe connection {9.05 (/4F) Liquid refrigerant pipe connection {9.5 (/8F) Knock out hole for right piping Knock out holes for power line -{7 Rear piping hole Knock out holes for power line -{9 Knock out hole for front piping Piping cover Oval holes (standard bolt M0) Bottom piping hole shaped notched holes (standard bolt M0) unit : mm Drain hole (-{ hole)...indicates the dimensions of the cutoff valve connector....make sure that the panel can be easily removed for maintenance when a piping cover is used for aesthetic reasons. 8

19 7 WIRING DIAGRAM PUMY-P5VMA PUMY-P5VMA SYMBOL NAME SYMBOL NAME SYMBOL NAME SYMBOL NAME TB Terminal Block(Power Supply) 5C Magnetic Contactor N.F. Noise Filter Circuit Board CNS Connector(Multi system) TB Terminal Block(Transmission) S4 4-Way Valve LI/LO Connection Lead(L-Phase) CNS Connector(Centralized Control) TB7 Terminal Block(Centralized Control) SV Solenoide Valve(Hot Gas Bypass) NI/NO Connection Lead(N-Phase) CN4 Connector CE Smoothing Capacitor LEV(A) Expansion Valve EI Connection Terminal(Ground) CN40 Connector(Centralized Control Power Supply) C,C Fan Motor Capacitor MF,MF Fan Motor(Inner Thermostat) CNAC Connector CN4 Connector(For String Jumper Connector) DCL~4 Reactor(PUMY-P5VMA) MC Compressor(Inner Thermostat) CN5 Connector CN5 Connector(Connected for Option) DCL, Reactor(PUMY-P5VMA) Compressor drive signal,error signal RS Resistor(Rush Current Protection) P.B. Power Circuit Board M.B. Multi Circuit Board CND Connector(Connected for Option) ACTM Active Filter Module U/V/W Connection Terminal(U/V/W Phase) F,F Fuse(6.A) Auto Change Over Signal TH Thermistor(Discharge Temperature Detection) CN~6 Connector SW Switch(Display Selection) CNS Connector(Connected for Option) TH Thermistor CNDC Connector SW Switch(Function Selection) Demand Signal (Low Pressure Saturated Temp.Detection) CNAF Connector SW Switch(Test Run) X500 Relay(Magnetic Contactor) TH5 Thermistor IGBT Converter,Inverter SW4 Switch(Model Selection) X50 Relay(4-Way Valve) (Pipe Temp.Detection / Judging Defrost) LED Light Emitting Diode(Inverter Control Status) SW5 Switch(Function Selection) SW5- Auto Change Over X50 Relay(Solenoid Valve) TH6 Thermistor(Outdoor Temp.Detection) SC-S,R Screw Type Terminal(L./N-Phase) OFF;disabled ON;enabled LED, Digital Indication LED THHS A/B Thermistor(Radiator Panel) A;ACTM,B;IGBT SC-P,P Screw Type Terminal(DC Voltage) SW6 Switch(Function Selection) Operation Inspection Indication 6HS High Pressuer Sensor SC-N,N Screw Type Terminal(DC Voltage) SWU Switch(Unit Address Selection,st digit) (Discharge Pressure Detection) SWU Switch(Unit Address Selection,nd digit) 49C Thermal Switch(Compressor) TO INDOOR UNIT CONNECTING WIRES DC 0V (Non-polar) FOR CENTRALIZED CONTROL DC 0V (Non-polar) NO FUSE BREAKER A L POWER SUPPLY ~ / N V N TB M BRN M BRN S TB7 M ORN M ORN S TB L N * The address automatically becomes "00" if it is set as "0~50". LEV 6 < M.B.> TH TH5 TH6 TH 6HS TH (WHT) * 49C YLW YLW 654 LEV-A (WHT) 49C(GRY) CNS(WHT) CND(WHT) CNS LED LED CN5 (WHT) (RED) CNS 4 (YLW) SW4 ON 7.V 4.COMP. ON 5.Error MF RED C MF RED C ORN ORN WHT BLU WHT BLU WHT BLU WHT BLU MF (WHT) SWU SWU OFF TH5 (nd digit) (st digit) 4 (GRN) SW SW5 ON ON TH6 (RED) OFF OFF TH SW SW SW6 (WHT) ON ON ON OFF OFF OFF 6HS (WHT) CN4 (WHT) CNDC(PNK) CN (WHT) F.C 4 4 CN4(WHT) CN40(WHT) F (6.A) MF (WHT) 5C(ORG) YLW YLW X500 S4(GRN) X50 SV(BLK) X50 CH(BLU) F (6.A) CNAC (RED) BLU BLU BLK BLK 5C S4 SV CN5 (RED) LI NI < N.F.> EI CNAC (RED) LO NO THHS_A THHS_B RS 5C CN4 (WHT) CN (WHT) CN6 (WHT) CN5 (RED) SCR-N SCR-P CNDC (PNK) CNAF (WHT) IGBT CN (WHT) W V U LED SCR-S SCR-R SCR-P SCR-N < P.B.> BLK WHT MC RED + CE P N N I DCL4 DCL 45 6 Only PUMY-P5VMA DCL L L L L DCL DCL + - ACTM DCL NOTES:. Refer to the wiring diagrams of the indoor units for details on wiring of each indoor unit.. Symbols used in wiring diagram above are. :Terminal block, :Connector, :Insertion tab.. Self-diagnosis function The indoor and outdoor units can be diagnosed automatically using the self-diagnosis switch(sw) and LED, (LED indication)found on the multi-controller of the outdoor unit. LED indication : Set all contacts of SW to OFF. 4. For the system utilizing R-converter units(pac-sf9lb),the following functions are not available. SW;TEST RUN SW5-;AUTO CHANGE OVER CND;AUTO CHANGE OVER(external singnal) 5. The input for CND -(AUTO CHANGE OVER EXTERNAL SIGNEL)is as follows. Short;heating Open;Cooling(It differs from Service ref.pumy-p5yma) (Example) During normal operation When the compressor and SV are The LED indicates the drive state of the controller in the outdoor unit. turned during cooling operation. Bit Indication Compressor 5C S4 SV Always lit operated When fault requiring inspection has occurred The LED alternately indicates the inspection code and the location of the unit in which the fault has occurred. 9

20 PUMY-P5YMA SYMBOL NAME SYMBOL NAME SYMBOL NAME SYMBOL NAME ACCT CONNECTOR <CURRENT DETECTION> C,C FAN MOTOR CAPACITOR SV SOLENOID VALVE <HOT GAS BYPASS> TH THERMISTOR <LOW PRESSURE SATURATED CB,CB SMOOTHING CAPACITOR DM DIODE MODULE SW SWITCH <DISPLAY SELECTION> TEMPERATURE DETECTION> CNA CONNECTOR <POWER SUPPLY> DCL REACTOR SW SWITCH <FUNCTION SELECTION> TH5 THERMISTOR <PIPE TEMPERATURE DETECTION CNR CONNECTOR <DISCHARGE CIRCUIT, POWER SUPPLY> F.C FAN CONTROL SW SWITCH <TEST RUN> JUDGING DEFROST> CNS CONNECTOR <MULTI SYSTEM> FUSE FUSE (6.A) SW4 SWITCH <MODEL SELECTION> TH6 THERMISTOR CNS CONNECTOR <CENTRALIZED CONTROL> FUSE FUSE (A) SW5 SWITCH <FUNCTION SELECTION> <OUTDOOR TEMPERATURE DETECTION> CN CONNECTOR <CONTROLLER DRIVE CONTROL> IPM INTELLIGENT POWER MODULE SWU SWITCH <UNIT ADDRESS SELECTION,ST DIGIT> X RELAY CN CONNECTOR <POWER SYNC SIGNAL, PROTECTION> LD DIGITAL INDATION LED SWU SWITCH <UNIT ADDRESS SELECTION,ND DIGIT> X7 RELAY <MAGNET CONTACTOR> CN CONNECTOR <POWER SUPPLY 0V,V,5V> <OPERATION INSPECTION INDATION> SWU SWITCH <UNIT ADDRESS SELECTION,RD DIGIT> X7 RELAY <4-WAY VALVE> CN4 CONNECTOR <INVERTER SIGNAL 5V> MC COMPRESSOR <INNER THERMOSTAT> TB TERMINAL BLOCK <POWER SUPPLY> X7 RELAY <SOLENOID VALVE> CN40 CONNECTOR <CENTRALIZED CONTROL POWER SUPPLY> MF,MF FAN MOTOR <INNER THERMOSTAT> TB TERMINAL BLOCK <TRANSMISSION> ZNR VARISTOR CN4 CONNECTOR <FOR STORING JUMPER CONNECTOR> NF NOISE FILTER TB7 TERMINAL BLOCK <CENTRALIZED CONTROL> S4 4-WAY VALVE CN5 CONNECTOR <COMPRESSOR DRIVE SIGNAL OUTPUT> RS RESISTOR <RUSH CURRENT PROTECT> THHS THERMISTOR 49C THERMAL SWITCH <COMPRESSOR> <IPM RADIATOR PANEL CND CONNECTOR <AUTO CHANGE OVER SIGNAL> RB,RB RESISTOR <VOLTAGE BALANCE ADJUSTMENT> TEMPERATURE DETECTION> 5C MAGNET CONTACTOR CNS CONNECTOR <DEMAND SIGNAL> RD,RD RESISTOR <DISCHARGE> TH THERMISTOR 6HS HIGH PRESSURE SENSOR <DISCHARGE TEMPERATURE C0,C0 SMOOTHING CAPACITOR SLEV EXPANSION VALVE <DISCHARGE PRESSURE DETECTION> DETECTION> C0 CAPACITOR <FILTER> THHS TH6 TH5 TH TH 6HS SLEV 6 TO INDOOR UNIT CONNECTING WIRES DC 0V (Non-polar) FOR CENTRALIZED CONTROL DC 0V (Non-polar) TB M BRN M TB7 M ORN M NO FUSE BREAKER TB 5A L L L N L L L N RED WHT BLK BLU POWER SUPPLY N~ 80/0-45/40V 50Hz S S GROUND BRN ORN GRN/YLW 4 CN40 (WHT) CNS (YLW) CNS (RED) CN4 CN5 CND (WHT) (WHT) (WHT) LD (RED) (WHT) CNA CNR YLW YLW NF LI (RED) CNA LO RED LI LO WHT LI LO BLK N E GRN SWU SWU SWU (rd digit)(nd digit) (st digit) <MULTI CONTROLLER BOARD> <RESISTOR BOARD> NOTES :. Refer to the wiring diagrams of the indoor units for details on wiring of each indoor unit.. Symbols used in wiring diagram above are. : Terminal block, : Connector, :Insertion tab.. Self-diagnosis function The indoor and outdoor units can be diagnosed automatically using the self-diagnosis switch (SW) and LD(LED indication) found on the multi-controller of the outdoor unit. LED indication : Set all contacts of SW to OFF. (WHT) CNR CNS (RED) <POWER SUPPLY BOARD> During normal operation The LED indicates the drive state of the controller in the outdoor unit. Bit Indication Compressor operated 5C S4 SV Always lit ~ ~ RD RD X X RB RB 5 RS DM ~ + When fault requiring inspection has occurred The LED alternately indicates the inspection code and the location of the unit in which the fault has occurred. 6 BLK ZNR BLU DCL 5C N P BLK RED BLK BLU 0 RED U P IPM C0 + U C0 V - + CB WHT P BLU + CB WHT MC V BLK W W + - C THHS TH6 TH5 TH TH 6HS SLEV (BLK) (WHT)(GRN) (GRN)(WHT) (WHT) (WHT) SW SW ON ON OFF OFF SW SW4 SW5 ON ON ON ACCT (YLW) N N WHT OFF OFF 4 OFF (RED) CN (YLW) CN (WHT) CN C YLW YLW C CN CN CN CN4 (YLW) (RED) (YLW) (WHT) (YLW) FUSE (A) E GRN 4 FUSE (6.A) X7 6 (BLU) (GRN) 5C S4 YLW YLW 5C BLU BLU S4 X7 BLK BLK SV (YLW) CN X7 (BLK) (WHT) (WHT) SV MF MF BLU WHT BLU WHT MF RED ORN C F.C BLU WHT BLU WHT MF RED ORN C (Example) When the compressor and SV are turned during cooling operation

21 PUMY-P5YMA SYMBOL NAME SYMBOL NAME SYMBOL NAME SYMBOL NAME ACCT CONNECTOR <CURRENT DETECTION> C,C FAN MOTOR CAPACITOR SV SOLENOID VALVE <HOT GAS BYPASS> TH THERMISTOR CB,CB SMOOTHING CAPACITOR DM DIODE MODULE SW SWITCH <DISPLAY SELECTION> <LOW PRESSURE SATURATED TEMP. DETECTION> CNA CONNECTOR <POWER SUPPLY> DCL REACTOR SW SWITCH <FUNCTION SELECTION> TH5 THERMISTOR CNR CONNECTOR <DISCHARGE CIRCUIT,POWER SUPPLY> F.C FAN CONTROL SW SWITCH <TEST RUN> <PIPE TEMP. DETECTION JUDGING DEFROST> CNS CONNECTOR <MULTI SYSTEM> FUSE FUSE (6.A) SW4 SWITCH <MODEL SELECTION> TH6 THERMISTOR CNS CONNECTOR <CENTRALIZED CONTROL> FUSE FUSE (A) SW5 SWITCH <FUNCTION SELECTION> <OUTDOOR TEMP. DETECTION> CN CONNECTOR <CONTROLLER DRIVE CONTROL> IPM INTELLIGENT POWER MODULE SW5- AUTO CHANGE OVER X RELAY OFF : disabled ON : enabled CN CONNECTOR <POWER SYNC SIGNAL,PROTECTION> LD DIGITAL INDATION LED X7 RELAY <MAGNET CONTACTOR> CN CONNECTOR <POWER SUPPLY 0V,V,5V> <OPERATION INSPECTION INDATION> SWU SWITCH <UNIT ADDRESS SELECTION,ST DIGIT> X7 RELAY <4-WAY VALVE> CN4 CONNECTOR <INVERTER SIGNAL 5V> MC COMPRESSOR <INNER THERMOSTAT> SWU SWITCH <UNIT ADDRESS SELECTION,ND DIGIT> X7 RELAY <SOLENOID VALVE> CN40 CONNECTOR <CENTRALIZED CONTROL POWER SUPPLY> MF,MF FAN MOTOR <INNER THERMOSTAT> SWU SWITCH <UNIT ADDRESS SELECTION,RD DIGIT> ZNR VARISTOR CN4 CONNECTOR <FOR STORING JUMPER CONNECTOR> NF NOISE FILTER TB TERMINAL BLOCK <POWER SUPPLY> S4 4-WAY VALVE CN5 CONNECTOR <COMPRESSOR DRIVE SIGNAL OUTPUT> RS RESISTOR <RUSH CURRENT PROTECT> TB TERMINAL BLOCK <TRANSMISSION> 49C THERMAL SWITCH <COMPRESSOR> CND CONNECTOR <AUTO CHANGE OVER SIGNAL> RB,RB RESISTOR <VOLTAGE BALANCE ADJUSTMENT> TB7 TERMINAL BLOCK <CENTRALIZED CONTROL> 5C MAGNET CONTACTOR CNS CONNECTOR <DEMAND SIGNAL> RD,RD RESISTOR <DISCHARGE> THHS THERMISTOR 6HS HIGH PRESSURE SENSOR C0,C0 SMOOTHING CAPACITOR SLEV EXPANSION VALVE <IPM RADIATOR PANEL TEMP. DETECTION> <DISCHARGE PRESSURE DETECTION> C0 CAPACITOR <FILTER> TH THERMISTOR <DISCHARGE TEMP. DETECTION> THHS TH6 TH5 TH TH 6HS SLEV 6 4 CN40 (WHT) CNS (YLW) CNS (RED) 4 CN4 (WHT) LD 4 5 CN5 CND (WHT) (WHT) 50 4 SWU 50 4 SWU SWU (rd digit)(nd digit) (st digit) <MULTI CONTROLLER BOARD> CNS (WHT) THHS TH6 TH5 TH TH 6HS (BLK) (WHT) (GRN) (GRN) (WHT) (WHT) ON SW OFF SW SW4 ON ON ON SW OFF SW5 ON OFF OFF OFF (RED) (YLW) (WHT) CN CN CN SLEV (WHT) ACCT (YLW) (YLW) CN U MC V W 49C TO INDOOR UNIT CONNECTING WIRES DC 0V (Non-polar) FOR CENTRALIZED CONTROL DC 0V (Non-polar) TB M BRN M TB7 M ORN M NO FUSE BREAKER TB 5A L L L L POWER SUPPLY N~ L L 80/0-45/40V N N 50Hz S S GROUND BRN ORN RED WHT BLK BLU GRN/YLW <RESISTOR BOARD> <POWER SUPPLY BOARD> RD X (WHT) CNR X RB RB 5 RS 6 8 (RED) (WHT) 0 CNA CNR N YLW YLW CNA NF LI (RED) RED LO WHT LI LO BLK LI LO N E GRN ~ DM ~ RD ~ + 6 BLK ZNR DCL BLU 5C P BLK RED BLK BLU RED U P IPM C0 C0 + CB - + CB - WHT WHT V P + - BLU BLK W C0 N + - N WHT YLW YLW C CN CN CN CN4 (YLW) (RED) (YLW) (WHT) (YLW) FUSE (A) E GRN FUSE (6.A) YLW YLW 5C X7 X7 (BLU) (GRN) (BLK) (WHT) (WHT) 5C S4 SV MF MF BLU BLU S4 BLK BLK SV X7 BLU WHT BLU WHT MF RED ORN C F.C BLU WHT BLU WHT MF RED ORN C NOTES:.Refer to the wiring diagrams of the indoor units for details on wiring of each indoor unit..symbols used in wiring diagram above are. :Terminal block, :Connector, :Insertion tab..self-diagnosis function The indoor and outdoor units can be diagnosed automatically using the self-diagnosis switch(sw) and LD(LED indication) found on the multi-controller of the outdoor unit. LED indication : Set all contacts of SW to OFF. 4.For the system utilizing R-converter units(pac-sf9lb), the following functions are not available. SW : TEST RUN SW5- : AUTO CHANGE OVER CND : AUTO CHANGE OVER(external singnal) 5.The input for CND -(AUTO CHANGE OVER EXTERNAL SIGNEL)is as follows. Short : heating Open : Cooling(It differs from Service ref. PUMY-P5YMA) During normal operation The LED indicates the drive state of the controller in the outdoor unit. Bit Indication Compressor 5C S4 SV Always lit operated When fault requiring inspection has occurred The LED alternately indicates the inspection code and the location of the unit in which the fault has occurred. (Example) When the compressor and SV are turned during cooling operation

22 8 NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION 8-. TRANSMISSION SYSTEM SETUP A transmission wire must be connected to each refrigerant system (outdoor and indoor). Set addresses: Outdoor unit Indoor unit Remote controller PUMY-P5VMA has no SW (rd digit). The address automatically become "00" if it is set as "0~50". Remote controller Remote controller Remote controller Remote controller Remote controller Remote controller 07 Remote controller For centralized management For centralized management Piping Outdoor unit For remote controller Transmission wire Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit Address SW Address SW Address SW Address SW Address SW Address SW Address SW Address SW Address SW Address SW Outdoor unit For remote controller Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit Address SW Address SW Address SW Address SW Address SW Address SW 50 4 Address SW

23 8-. REFRIGERANT SYSTEM DIAGRAM PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5YMA Service port #50 Strainer 4-way valve High-pressure sensor discharge pressure detection (6HS) (Refrigerant flow) Cooling Heating Thermistor TH6 (outdoor air temperature detection) Flare Check valve (low pressure) Thermistor TH (Saturation temperature of suction pressure) Capillary tube Flare Strainer #00 Accumulator Capillary tube Strainer Expansion valve W Oil Check valve separator (High pressure) Thermistor TH (discharge temperature detection) Compressor (MC) Solenoid valve <Bypass> (SV) Capillary tube 4 Dryer Outdoor heat exchanger Thermistor THHS (Radiator panel temperature sensor) W Only PUMY-P5V Thermistor THHS-A Thermistor THHS-B Strainer (#00) Thermistor TH5 (piping temperature monitoring and determination) Capillary tube Strainer Over cooking heat exchanger #00 Strainer Service port #00 Outdoor unit W ( VMA, VMA : LEV(A) YMA, YMA : SLEV ) Refrigerant Piping Specifications (dimensions of flared connector) Capacity Item Liquid piping Gas piping 0, 5,, 40 {6.5 </4 > {.7 </ > Indoor unit 50, 6, 7, 80 {9.5 </8 > {5.88 <5/8 > 00, 5 {9.5 </8 > {9.05 </4 > Outdoor unit 5 {9.5 </8 > {9.05 </4 > PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5YMA Capillary tube (for return of oil from oil separator) {.5 O {0.6 O L500 Capillary tube (for Evaporating temperature detection) {.5 O {0.6 O L500 Capillary tube (for maintaining equilibrium between upper and lower coils) ({4 O {.0 O L00) O Capillary tube 4 (for SV) {4 O {.4 O L60 Concerning the Compressor This system has a scroll compressor. This compressor uses a low pressure shell that typically has a temperature in the range 0-80 C. In addition, compressor wiring should be in the direction of rotation to the right. Wire colors are red (U), white(v), black (W), yellow and yellow (thermal switch).

24 8-. SYSTEM CONTROL 8--. Operating a Single Refrigerant System When operating either alone or as part of a group, a M-NET remote controller (NR) may be used to control a single refrigerant system that does not overlap with any other system. <Example of system arrangement> Using a M-NET remote controller (NR) Address setting must be performed. The NR wire and indoor and outdoor transmission wires must be a non-polar two wire cable. One NR may be connected to a maximum of 6 indoor unit. Two NR units may be used to perform control tasks (the second one pressed will have priority if two are pressed simultaneously). For the system utilizing R-Converter units (PAC-SF9LB), the following systems are not available. Group operation system, centralized controller, group remote controller, etc. (See the installation manual of R-Converter units.) Outdoor unit For indoor-outdoor transmission wire Indoor unit NR Indoor unit indoor-outdoor trnasmission cable Indoor unit NR NR NR remote controllers Remote control wire Indoor unit Indoor unit NR Remote controller network Group operation (maximum 6 indoor units) If the user plans to install multiple refrigerant systems and a centralized controller in the future, it is strongly suggested that a NR be used. 4

25 8--. System Controller (SC) to Perform Centralized Control <Example of System Arrangement> The following diagram shows the use of system controller (SC) to control a system that includes the multiple outdoor unit. Outdoor unit <Room A> <Room B> Indoor outdoor transmission wire (Shielded wire) <Room C> Transmission wire for centralized control Indoor unit A Indoor unit Indoor unit Indoor unit A Remote control wire A Indoor unit Remote controller network Outdoor unit <Room D> <Room E> Indoor outdoor transmission wire (Shielded wire) Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit A A A For transmission wire Power supply installation PAC-SCKUA PAC-SC4KUA System controller SC: Centralized controller, linked system control board, group remote controller, etc. A : M-NET or MA remote controller (Coexistence of M-NET remote controller and MA remote controller is not admitted in the same system.) Note ) The NR, SC, indoor and outdoor unit all require address settings. Indoor unit Linked settings must be made within a group. ~ 50 Outdoor unit The lowest address of an indoor unit within a refrigerant system is ~ 00 w M-NET remote controller (Main) The lowest address of an indoor unit within a group is ~ 50 M-NET remote controller (Sub) The address of the main remote controller is ~ 00 SC 0 or 0 ~ 50 MA Remote controller Unnecessary address setting (Necessary main/sub setting) w The address automatically becomes 00 if it is set as 0~50. (PUMY-P5VMA, PUMY-P5VMA) ) Indoor unit that may be connected with an SC are shown as follows. Centralized controller Multi-unit controller board Group controller 50 group /50 units 4 group /50 units 8 group /6 units ) There may be a maximum of two controllers when a group has 6 indoor units or less. 4) The transmission wire must have a power supply when an SC is used. Please connect the power supply for the transmission wire to the centralized controller transmission wire. SC with units or less SC with to 5 units Power supply for transmission wire PAC-SCKU Power supply for transmission wire PAC-SC4KU 5) Use a shielded wire (at least.5mm )for the indoor, outdoor, and centralized controller transmission wires. In addition, all shielded wires in a system must be grounded at one point. If the length of the remote control wire exceeds 0m, use an insulated wire for the extra portion. 5

26 8--. Example for the System Example for wiring control cables, wiring method and address setting, permissible lengths, and the prohibited items are listed in the standard system with detailed explanation. The explanation for the system in this section : Use one single outdoor unit and multiple outdoor units for M-NET remote control system. Use one single outdoor unit and multiple indoor units in the multiple outdoor units for the M-NET remote control system. A. Example of a M-NET remote controller system (address setting is necessary.) Example of wiring control cables Wiring Method and Address Setting. Standard operation OC (05) One remote controller for each indoor unit. Inside ( ) Address: There is no need for setting the 00 position on the remote controller.. Operation using two remote controllers TB M M S TB M M S OC (05) TB7 M M S Using two remote controllers for each indoor unit.. Group operation TB M M S OC (05) TB7 M M S TB7 M M S Multiple indoor units operated together by one remote controller L r L TB6 (0) TB5 M M S TB6 (0) TB5 M M S NR (00) (00) TB5 TB6 (5) TB5 L r TB6 (0) TB5 M M S TB6 (0) NR (00) TB5 M M S (00) TB6 (5) NR NR NR NR Main Sub Main Sub TB5 M M S TB6 (0) NR (00) Main TB5 Combinations of through above are possible. TB5 M M S (00) TB5 TB5 TB5 Sub 6 a. Use feed wiring to connect terminals M and M on transmission cable block (TB) for the outdoor unit (OC) to terminals M and M on the transmission cable block (TB5) of each indoor unit (). Use non-polarized two wire. b. Connect terminals M and M on transmission cable terminal block (TB5) for each indoor unit with the terminal block (TB6) for the remote controller (NR). c. Set the address setting switch as shown below. Unit Indoor unit () Outdoor unit (OC) Remote controller (NR) Range 00 to to 00 0 to 50 a. Same as above. b. Same as above. c. Set address switch as shown below. Unit Indoor Unit () Outdoor unit (OC) Main Remote Controller (NR) Sub Remote Controller (NR) Range 00 to to 00 0 to 50 5 to 00 Setting Method Use the most recent address of all the indoor unit plus 50. Indoor unit address plus 00. Setting Method Use the most recent address of all the indoor units plus 50. Indoor unit address plus 00. Indoor unit address plus 50. a. Same as above. b. Connect terminals M and M on transmission cable terminal block (TB5) of the main unit with the most most recent address within the same indoor unit () group to terminal block (TB6) on the remote controller. c. Set the address setting switch as shown below. Unit (Main) (Sub) Outdoor Unit Main Remote Controller Sub Remote Controller Range 00 to to to 00 0 to 50 5 to 00 Setting Method Use the most recent address within the same group of indoor units. Use an address, other than that of the (Main) from among the units within the same group of indoor units. This must be in sequence with the (Main). Use the most recent address of all the indoor units plus 50. Set at an (Main) address within the same group plus 00. Set at an (Main) address within the same group plus 50. d. Use the indoor unit () within the group with the most functions as the (Main) unit.

27 Name, Symbol and the Maximum Remote controller Units for Connection Name Outdoor unit Indoor unit M-NET remote controller Symbol OC NR Maximum units for connection One OC unit can be connect to -8 units Maximum two NR for one indoor unit, Maximum 6 NR for one OC Permissible Lengths Longest transmission cable length (.5 mm ) L + L, L + L, L + L [ 00m Remote controller cable length. If 0.5 to 0.75 mm R, R [0m. If the length exceeds 0 meters, the exceeding section should be.5 mm and that section should be a value within the total extension length of the transmission cable and maximum transmission cable length. (L) Prohibited items M-NET remote controller(nr) and MA remote controller(ma) cannot be used together. Do not connect anything with TB5 of indoor unit(). TB M M S OC (05) TB7 M M S TB5 TB5 TB5 TB5 M M S M M S TB6 (0) NR (00) (00) MA Same as above OC TB M M S (05) TB7 M M S TB6 (0) NR TB5 M M S (00) TB5 TB6 (5) NR TB6 (0) NR (00) TB5 M M S TB5 TB6 (0) NR Main Sub Main Sub TB6 (04) NR Use the indoor unit() address plus 50 as the sub remote controller address. In this case, it should be 5. Three or more remote controller (NR) cannot be connected to one indoor unit. Same as above OC Main Sub TB M M S (05) TB7 M M S (00) TB5 TB5 M M S TB5 M M S (00) TB5 TB6 (0) NR The remote controller address is the indoor unit main address plus 00. In this case, it should be 0. 7

28 B. Example of a group operation system with two or more outdoor units and a M-NET remote controller. (Shielding wires and address settings are necessary.) L Between terminal blocks L L L4 OC Group Group Group 5 CN40 (05) Examples of Transmission Cable Wiring L9 TB M M S TB M M S M M S TB7 Shielded wire OC (05) M M S TB7 R TB5 M M S TB6 (0) (00) TB5 TB5 TB5 NR L5 L6 L7 TB5 M M S (00) TB5 M M S TB5 M M S (004) (00) TB5 R TB5 M M S TB5 M M S (005) (007) TB5 TB5 TB5 M M S (006) TB5 L8 TB6 (05) R TB6 (55) R4 NR NR Sub remote controller ( ) Address TB6 (0) NR Wiring Method Address Settings a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (), as well for all OC-OC, and - wiring intervals. b. Use feed wiring to connect terminals M and M and the ground terminal on the transmission cable terminal block (TB) of each outdoor unit (OC) to terminals M and M on the terminal S on the transmission cable block of the indoor unit (). c. Connect terminals M and M on the transmission cable terminal block of the indoor unit () that has the most recent address within the same group to the terminal block (TB6) on the remote controller (NR). d. Connect together terminals M, M and terminal S on the terminal block for central control (TB7) for the outdoor unit (OC). e. Use the grounded wire to connect the S-terminal on the transmission terminal of the outdoor unit (OC) and the grounded terminal for the electrical components box. f. On one outdoor unit only, change the jumper connector on the control panel from CN4 to CN40. g. Connect the terminal S on the terminal block for central control (TB7) for the outdoor unit (OC) for the unit into which the jumper connector was inserted into CN40 in Step above to the ground terminal ; in the electrical component box. h. Set the address setting switch as follows. Unit (Main) (Sub) Outdoor Unit Main Remote Controller Sub Remote Controller Range 00 to to to 00 0 to 50 5 to 00 Setting Method Use the most recent address within the same group of indoor units. Use an address, other than that of the (Main) from among the units within the same group of indoor units. This must be in sequence with the (Main). Use the most recent address of all the indoor units plus 50. Set at an (Main) address within the same group plus 00. Set at an (Main) address within the same group plus 50. i. The group setting operations among the multiple indoor units is done by the remote controller (NR) after the electrical power has been turned on. 8

29 Name, Symbol, and the Maximum Units for Connection Permissible Length Max length via outdoor units : L+L+L+L4+L5+L6+L7+L9 L+L+L+L4+L5+L6+L8+L9 [ 500 meters (.5mm ) Max transmission cable length : L+L+L+L4, L5+L6+L7, L5+L6+L8, L7+L8 [ 00 meters (.5mm ) Remote controller cable length : R,R, R, R4 [ 0 meters (0.5 to 0.75mm ) If the length exceeds 0 meters, use a.5 mm shielded wire. The length of this section (L8) should be included in the calculation of the maximum length and overall length. OC Group Group Group 5 CN40 (05) TB M M S M M S TB7 TB5 M M S (00) TB5 TB5 M M S (004) TB5 TB5 M M S (005) TB5 TB5 M M S (006) TB5 Prohibited items Shielded wire TB M M S OC (05) M M S TB7 TB6 (0) NR Remote controller TB5 M M S (00) TB5 TB5 M M S (00) TB5 TB6 (05) NR TB5 M M S (007) TB6 (55) NR TB5 TB6 (0) NR The terminal S on the terminal block (TB7) for the central control panel should be connected to the ground terminal ; of the electric components box for one outdoor unit only. Never connect together the terminal blocks (TB5) for transmission wires for indoor units () that have been connected to different outdoor units (OC). Set all addresses to ensure that they are not overlapped. It cannot be connected M-NET remote controller and MA remote controller with indoor unit of the same group using together. 9

30 C. Example of a MA remote controller system (address setting is not necessary.) NOTE : In the case of same group operation, need to set the address that is only main indoor unit. Example of wiring control cables. Standard operation TB M M S OC (000) TB7 M M S L L (000) (000) TB5 TB5 TB5 TB5 M M S M M S Wiring Method and Address Setting a. Use feed wiring to connect terminals M and M on transmission cable block (TB) for the outdoor unit (OC) to terminals M and M on the transmission cable block (TB5) of each indoor unit (). Use non-polarized two wire. b. Connect terminals and on transmission cable terminal block (TB5) for each indoor unit with the terminal block for the MA remote controller (MA). r r One remote controller for each indoor unit. Inside ( ) Address: There is no need for setting the 00 position on the remote controller. MA MA. Operation using two remote controllers OC TB M M S (000) TB7 M M S r (000) (000) TB5 TB5 TB5 TB5 M M S M M S r4 r5 r6 a. The same as above. b. The same as above. c. In the case of using tow remote controllers, connect terminals and on transmission cable terminal block (TB5) for each indoor unit with the terminal block for tow remote controllers. Set the sub remote controller position for one of MA remote controller s main switch. Refer to the installation manual of MA remote controller Using two remote controllers for each indoor unit. MA MA MA MA. Group operation TB M M S OC (000) TB7 M M S r7 (000) TB5 TB5 M M S TB5 M M S (000) TB5 a. The same as above. b. The same as above. c. Connect terminals and on transmission cable terminal block (TB5) of each indoor unit, which is doing group operation with the terminal block the MA remote controller. Use non-polarized tow wire. d. In the case of same group operation, need to set the address that is only main indoor unit. Please set the address of the indoor unit with the most functions in the same group in the number that 0-50 is young. Multiple indoor units operated together by one remote controller MA r7 Combinations of through above are possible. 0

31 Permissible Lengths Longest transmission cable length L + L [ 00m (.5 mm ) MA remote controller cable length R, R [ 00m (0. ~.5 mm ) TB M M S OC (000) TB7 M M S Prohibited items (000) TB5 TB5 TB5 TB5 M M S M M S The MA remote controller and the M-NET remote controller cannot be used together with the indoor unit the of the same group. (000) NR MA MA Longest transmission cable length The same as above. MA remote controller cable length R +R4, R5 +R6 [ 00m (0. ~.5 mm ) TB M M S OC (000) TB7 M M S (000) (000) TB5 TB5 TB5 TB5 M M S M M S Three MA remote controller or more cannot be connect with the indoor unit of the same group. MA MA MA MA MA Longest transmission cable length The same as above. MA remote controller cable length R7 +R8 [ 00m (0. ~.5 mm ) TB M M S OC (05) TB7 M M S (00) (00) TB5 TB5 TB5 TB5 M M S M M S The second MA remote control is connected with the terminal block(tb5) for the MA remote control of the same indoor unit() as the first remote control. MA MA

32 D. Example of a group operation with two or more outdoor units and a MA remote controller. (Shielding wires and address settings are necessary.) L Between terminal blocks L L L4 Examples of Transmission Cable Wiring L9 OC CN40 CN4 (05) TB M M S TB M M S M M S TB7 Shielded wire OC CN4 (05) M M S TB7 R Group (00) TB5 TB5 M M S TB5 M M S MA (00) TB5 L8 (004) TB5 TB5 M M S L5 L6 L7 Group Group 5 TB5 M M S (00) R (005) TB5 TB5 TB5 TB5 M M S M M S (007) TB5 TB5 TB5 M M S (006) R4 MA R MA Sub remote controller ( ) Address MA Wiring Method Address Settings a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (), as well for all OC-OC, and - wiring intervals. b. Use feed wiring to connect terminals M, M and S and the ground terminal on the transmission cable terminal block (TB) of each outdoor unit (OC) to terminals M, M and S on the transmission cable block (TB5) of the indoor unit (). c. Connect terminals M and M on the transmission cable terminal block of the indoor unit () that has the most recent address within the same group to the terminal block on the remote controller (MA). d. Connect together terminals M, M and terminal S on the terminal block for central control (TB7) for the outdoor unit (OC). e. Use the grounded wire to connect the S-terminal on the transmission terminal of the outdoor unit (OC) and the grounded terminal for the electrical components box. f. On one outdoor unit only, change the jumper connector on the control panel from CN4 to CN40. g. Connect the terminal S on the terminal block for central control (TB7) for the outdoor unit (OC) for the unit into which the jumper connector was inserted into CN40 in Step above to the ground terminal ; in the electrical component box. h. Set the address setting switch as follows. Unit (Main) (Sub) Outdoor Unit Range 00 to to to 00 Setting Method Use the most recent address within the same group of indoor units. Use an address, other than that of the (Main) from among the units within the same group of indoor units. This must be in sequence with the (Main). Use the most recent address of all the indoor units plus 50.

33 Name, Symbol, and the Maximum Units for Connection Permissible Length Max length via outdoor units : L+L+L+L4+L5+L6+L7+L9 L+L+L+L4+L5+L6+L8+L9 [ 500 meters (.5mm ) Max transmission cable length : L+L+L+L4, L5+L6+L7, L5+L6+L8, L7+L8 [ 00 meters (.5mm ) Remote controller cable length : R,R, R, R4 [ 0 meters (0.5 to 0.75mm ) If the length exceeds 0 meters, use a.5 mm shielded wire. The length of this section (L8) should be included in the calculation of the maximum length and overall length. Group Group Group 5 TB M M S OC CN40 (05) M M S TB7 (00) (004) (005) (006) TB5 TB5 TB5 TB5 TB5 TB5 TB5 TB5 M M S M M S M M S M M S Shielded wire MA MA MA Prohibited items TB M M S OC (05) M M S TB7 TB5 M M S (00) TB5 TB5 M M S (00) TB5 TB5 M M S (007) TB5 MA The terminal S on the terminal block (TB7) for the central control panel should be connected to the ground terminal ; of the electric components box for one outdoor unit only. Never connect together the terminal blocks (TB5) for transmission wires for indoor units () that have been connected to different outdoor units (OC). M-NET remote controller and MA remote controller cannot be connected with the indoor unit of the same group wring together

34 9 TROUBLESHOOTING 9-. CHECK POINTS FOR TEST RUN 9--. Procedures of test run () Before test run, make sure that following work is completed. Installation related : Make sure that the panel of cassette type and electrical wiring is done. Otherwise electrical functions like auto vane will not operate normally. Piping related : Perform leakage test of refrigerant and drain piping. Make sure that all joints are perfectly insulated. Check stop valves on both liquid and gas side for full open. Electrical wiring related : Check ground wire, transmission cable, remote controller cable, and power supply cable for secure connection. Make sure that all switch settings of address or adjustments for special specification systems are correctly settled. () Safety check : With the insulation tester of 500V, inspect the insulation resistance. Do not touch the transmission cable and remote controller cable with the tester. The resistance should be over.0 MΩ. Do not proceed inspection if the resistance in under.0 MΩ. Inspect between the outdoor unit power supply terminal block and ground first, metallic parts like refrigerant pipes or the electrical box next, then inspect all electrical wiring of outdoor unit, indoor unit, and all linked equipment. () Before operation : a) Turn the power supply switch of the outdoor unit to on for compressor protection. For a test run, wait at least hours from this point. b) Register control systems into remote controller(s). Never touch the on/ off switch of the remote controller(s). Refer to 8-- M-NET Remote Controller Settings on page 9 as for settings. In MA remote controller(s), this registration is unnecessary. (4) More than hours later form power supply to the outdoor unit, turn all power switch to on for test run. Perform test run according to the Operation procedure table of the bottom of this page. While test running, make test run reports. (5) When you deliver the unit after test run, instruct the end user for proper usage of the system using owners manual and the test run report you made to certificate normal operation. If abnormalities are detected during test run, refer to 9-- Countermeasures for Error During Test Run on page 7. As for DIP switch setting of outdoor unit, refer to 9-5. INTERNAL SWITCH FUNCTION TABLE on page 60. Check code indicator (see NOTE ) Test run remaining time indicator (see NOTE ) Display panel (Cooling/Heating) OPERATION SWITCH button,4 Control panel PAR-0MAA TEMP. TIMER SET Hr. C TEST RUN ON/OFF FILTER CHECK TEST Indoor unit liquid pipe temperature indicator (see NOTE 4) TEST RUN indicator ON/OFF LED (Lights up in operation) ON/OFF button 9 AIR DIRECTION button TEST RUN button LOUVER button 6 AIR SPEED button 5 Operation procedure Turn on the main power supply the all units at least hrs. before test run. HO appears on display panel for min. hrs later, press TEST RUN button twice to perform test run. TEST RUN appears on display panel. Press OPERATION SWITCH button to make sure that air blows out. 4 Select Cooling (or Heating) by OPERATION SWITCH button to make sure that cool (or warm) air blow out. 5 Press Fan speed button to make sure that fan speed in changed by the button. 6 Press AIR DIRECTION button or LOUVER button to make sure that air direction is adjustable(horizontal, downward, upward, and each angle). 7 Check outdoor fans for normal operation. 8 Check interlocked devices (like ventilator) for normal operation, if any. This is the end of test run operation. 9 Press ON/OFF button to stop and cancel test run. NOTE : If error code appears on remote controller or remote controller malfunction, refer to 9-- Countermeasures for Error During Run on page 7. NOTE : During test run operation -hours off timer activates automatically and remaining time is on remote controller and test run stops later. NOTE : During test run, the indoor liquid pipe temperature is displayed on remote controller instead of room temperature. NOTE 4 : Depend on a model, This function is not available is appears when air direction button is pressed, however, this is not malfunction. 4

35 9--. Special Function Operation and Settings (for M-NET Remote Controller) It is necessary to perform group settings and paired settings at making group settings of different refrigerant systems (multiple outdoor unit). (A) Group settings: Enter the indoor unit controlled by the remote controller, check the content of entries, and clear entries, etc. (B) Paired settings: Used to set the linked operation of a Lossnay unit. () Entering address: Follow the steps below to enter the addresses of the indoor unit using the remote controller. a) Group settings Turning off the remote controller: Press the ON/OFF button to stop operation (the indicator light will go off). Changing to indoor unit address display mode: If the FILTER and k buttons on the remote controller are pressed simultaneously and held for two seconds, the display shown in Figure will appear. Changing address: Press the temperature adjustment buttons to change the displayed address to the address to be entered. Entering the displayed address: Press the TEST RUN button to enter the indoor unit with the displayed address. The type of the unit will be displayed as shown in Figure if entry is completed normally. If a selected indoor unit does not exist, an error signal will be displayed as shown in Figure. When this happens, check whether the indoor unit actually exists and perform entry again. Returning to the normal mode after completing entry: Press the FILTER and k buttons simultaneously and hold for two seconds to return to the normal mode. Figure (A) Group setting display Figure Normal completion of entry Figure Entry error signal Type of unit is displayed Flashing 88 indicates entry error b) Paired Settings Turn off the remote controller: Press the remote controller s ON/OFF button to turn it off (the indicator light will go off). Put in indoor unit address display mode: Press the FILTER and k buttons on the remote controller simultaneously and hold for two seconds. The above steps are the same as when making group settings (A). Changing to the linked operation unit address display state: The display shown in Figure 4 will appear when the a button on the remote control is pressed. Displaying the address of the Lossnay unit and linked indoor unit: In this situation, the indoor unit number will be the lowest address of the group. The Lossnay unit will not operate if this setting is incorrect. If the temperature adjustment buttons are pressed, the address may be changed to the indoor unit that are to be linked. If the time setting buttons are pressed, the address of the linked units may be changed to the address where it is desired to enter the Lossnay. Linking the Lossnay and the indoor unit: The display shown in Figure 5 will appear when the TEST RUN button is pressed. The indoor unit whose address is displayed and the Lossnay unit with a linked address will operate in a linked manner. If it is desired to display the address of the Lossnay in the indoor unit address, display the indoor unit address in the linked unit address, and the above content will also be recorded. Apart from the indoor unit with the lowest address in the group, display and enter the addresses of the other indoor unit that are to be linked with the Lossnay unit. Returning to the normal mode after completing entry: Press the FILTER and k buttons on the remote controller simultaneously and hold for two seconds to return to the normal mode. Figure 4 (B) Making paired settings Figure 5 Completing normal entry The addresses of indoor unit and linked units are displayed simultaneously. (alternating display) These alternating or LC displays will appear when entry is completed normally. A flashing 88 will appear if there is a problem with the entry (indicating that the unit does not exist). 5

36 () Address check: Refer to section () regarding address entry. a) In making group settings: Turn off the remote controller: Press the remote controller's ON/OFF button to stop operation (the indicator light will go off). Locate the indoor unit address display mode: Press the FILTER and k buttons on the remote controller simultaneously and hold for two seconds. Display indoor unit address: The entered indoor units address and type will be displayed each time the button is pressed. When one entry is made, only one address will be displayed no matter how many times the w button is pressed. Returning to the normal mode after completing check: Simultaneously press the FILTER and k buttons on the remote controller and hold for two seconds to return to the normal mode. b) In making paired settings: Turn off the remote controller: Press the remote controller's ON/OFF button to stop operation (the indicator light will go off). Put in indoor unit address display mode: Press the FILTER and k buttons on the remote controller simultaneously and hold for two seconds. Changing to the linked operation unit address display state: Press the a button on the remote control. Displaying the address of the indoor unit to be checked: Change the address to that of the indoor unit to be checked by pressing the temperature adjustment buttons. Displaying the address of the linked Lossnay unit: Press the w button to display the addresses of the linked Lossnay and indoor unit in alternation. Displaying the addresses of other entered units: The addresses of the other entered units will be displayed in alternating fashion after resting the w button again. Returning to the normal mode after completing the check: Simultaneously press the FILTER and k buttons on the remote controller and hold for two seconds to return to the normal mode. () Clearing an address: Refer to section () regarding the address entry and section () regarding checking addresses. a) In making group settings: Turn off the remote controller: The procedure is same as a) in () Address check. Put in the indoor unit address display mode: The procedure is same as a) in () Address check. Displaying the indoor unit address to be cleared: The procedure is same as a) in () Address check. Clearing indoor unit address :...Pressing the q button on the remote controller twice will clear the address entry of the displayed indoor unit, resulting in the display shown in Figure 6. The display shown in Figure 7 will appear if an abnormality occurs and the entry is not cleared. Please repeat the clearing procedure. Returning to the normal mode after clearing an address: The procedure is same as a) in () Address check. Figure 6 Display after address has been cleared normally Figure 7 Display when an abnormality has occurred during clearing "--" will appear in the room temperature display location. "88" will appear in the room temperature display location. b) In making paired settings: Turn off the remote controller: The procedure is same as b) in () Address check. Put into the indoor unit address display mode: The procedure is same as b) in () Address check. Put into the linked unit address display mode: The procedure is same as b) in () Address check. Display the address of the Lossnay unit or the indoor unit to be cleared. Deleting the address of a linked indoor unit: Pressing the q button on the remote controller twice will clear the address entry of the displayed indoor unit, resulting in the display shown in Figure 8. Returning to the normal mode after clearing an address: The procedure is same as b) in () Address check. Figure 8 Display after address has been cleared normally (altenating display) "--" will appear in the unit type display location when an address has been cleared normally. "88" will appear in the unit type display location when an abnormality has occurred during clearing. 6

37 9--. Countermeasures for Error During Test Run If a problems occurs during test run, a code number will appear in the temperature display area on the remote controller (or LD on the outdoor unit), and the air conditioning system will automatically cease operating. Determine the nature of the abnormality and apply corrective measures. Check code Trouble Discharge temperature trouble Compressor's inner thermal sensor trouble High pressure trouble Excessive refrigerant replenishment Insufficient refrigerant Vacuum operation protection Drain pump trouble Drain sensor trouble (THd) Power synchronization signal trouble Indoor unit fan rotation trouble Inverter main voltage drop Overheat protection of radiator panel Multiple IPM errors (Over current trouble) Intake thermistor trouble (TH) or discharge thermistor trouble (TH) Liquid pipe thermistor trouble (TH) or low pressure saturation thermistor trouble (TH) Gas pipe temperature sensor trouble (TH) Piping temperature sensor trouble (TH5) Outdoor temperature sensor trouble (TH6) ACTM/IGBT Radiator panel thermistor trouble (THHS-A/B) (PUMY-P5VMA, PUMY-P5VMA) IPM Radiator panel thermistor trouble (THHS) (PUMY-P5YMA, PUMY-P5YMA) Pressure sensor trouble (6HS) Current sensor error (PUMY-P5VMA,PUMY-P5VMA) Check code 6600 Trouble Duplicated unit address setting Transmission error (Transmission processor hardware error) Transmission error (Transmission route BUSY) Transmission and reception error (Communication trouble with transmission processor) Transmission and reception error (No ACK error) No response MA communication receive signal error (no receive signal) MA communication send signal error (starting bit detection error) MA communication send error (H/W error) MA communication receive error (Synchronous recovery error) Total capacity error Capacity code error Connecting unit number error Address set error Remote controller sensor trouble Communication trouble with Power Board (PUMY-P5VMA, PUMY-P5VMA) The operational status of the outdoor unit controller is displayed on the LD of the outdoor unit under normal conditions (when all SW s are OFF) Field Display item Compressor is operating 5C S4 4 SV Lit steadily Example: When the air conditioner is in the heating mode and the SV and compressor turned on LD 5C : Compressor Contactor S4 : Four-way valve SV : Bypass valve 7

38 Display Meaning and detecting method Causes Check points 0 Discharge temperature abnormality When the discharge temperature thermistor (TH) detects 5;or more (st detection), the compressor stops and restarts operation in minutes. ) Gas leakage, Gas shortage ) Overloaded operation Check the refrigerant amount. Check the indoor/outdoor unit operating condition and status. When the thermistor detects 5;or more again (nd detection) within 0 minutes since the compressor has stopped, the compressor stops and restarts operation in minutes. When the thermistor detects 5;or more again (rd detection) within 0 minutes since the compressor has stopped times, the compressor stops abnormally. <0> is displayed. 4 When the thermistor detects 5; or more after 0 minutes since the compressor has stopped (st or nd time), it becomes the st detection or the same performance as above-mentioned. 5 It is being delay for abnormal stop during 0 minutes since the compressor has stopped. In this time, check delay code <0> will be displayed. 08 Compressor inner thermo abnormality ) Indoor linear expansion valve operation defective 4) Ball valve operation defective 5) Outdoor fan block and defective of fan motor (heating mode) 6) Gas leakage between high and low pressure (Defective of 4-way valve or compressor) 7) Solenoid valve (SV) performance defective (control failure to prevent the discharge temp. from rising by SV) Perform cool or heat operation to check the condition. Check ball valve is fully opened. Check the outdoor fan motor. Check the operating condition. Check the solenoid valve performance. 8) Thermistor defective Check the thermistor resistance. 9) Input circuit defective of multi controller board Check the intake temperature in discharge temperature thermistor (TH) by LD. (See 50 Discharge temperature thermistor error) When the inner thermo performs (st detection) during the compressor operation, the compressor stops and restarts operation in minutes. When the inner thermo performs again (nd detection) within 0 minutes since the compressor has stopped, or does not recover within 0 minutes, it stops abnormally. In this time <08> is displayed. When the inner thermo performs after 0 minutes since the compressor has stopped (st stop), it is the st detection and becomes the same performance as abovementioned. 4 It is being delay for abnormal stop during 0 minutes since the compressor has stopped. In this time, check delay code <08> will be displayed. ) Low voltage supplied to power supply terminal block ) Power supply L or L phase is opened. (When L phase is opened, power supply of the micro computer is not supplied.) ) Compressor failure (Over current by motor rare short, etc.) 4) Overloaded operation 5) Gas leakage, Gas shortage 6) Inner thermo defective 7) Input circuit defective of multi controller board or power supply board Measure the terminal voltage. Check the voltage reduction. Check the open phase. Check the coil resistance. Check the indoor/outdoor unit operating condition and status. Check the refrigerant amount. Check the current flows in inner thermo. When the inner thermo is normal and input circuit is defective, even if the inner thermo performs, the compressor does not operate and becomes error in 0 minutes. 0 High-pressure pressure abnormality ) Indoor unit short cycle When high-pressure pressure sensor detects.94mpa or more (st detection) during the compressor operation, the compressor stops and restarts operation in minutes ) Indoor unit filter clogging ) Air flow capacity decrease due to indoor fan dirt 4) Indoor heat exchanger dirt Check the indoor unit. Check the indoor unit filter. Check the indoor fan. Check the indoor unit heat exchanger. 8

39 Display Meaning and detecting method Causes Check points 0 When the sensor detects.94mpa or more again (nd detection) within 0 minutes since the compressor has stopped, the compressor stops again and restarts operation in minutes. When the sensor detects.94mpa or more again (rd detection) within 0 minutes since the compressor has stopped, the compressor stops again and restarts operation in minutes. 4 When the sensor detects.94mpa or more again (4th detection) within 0 minutes after rd compressor stop, it stops abnormally. In this time <0> is displayed. 5) Indoor fan motor lock Check the indoor fan motor. 6) Indoor fan motor failure Check the indoor fan motor. 7) 4-way valve performance failure (Stop in the middle of performance) 8) Ball valve performance failure (not full-opened) 9) Pipe clogged or broken 0) Indoor linear expansion valve performance failure ) Outdoor fan motor lock ) Outdoor fan motor failure Change COOL/HEAT operation mode to perform the 4-way valve. If any defective, replace the 4-way valve. Check the ball valve full-opened. Repair the defective points. Operate COOL or HEAT operation, and check the operation condition. Check the outdoor unit fan motor. Check the outdoor unit fan motor. 5 6 When the sensor detects.94mpa or more after 0 minutes since the compressor has stopped (st or nd or rd time), it becomes the st detection or the same performance as above-mentioned. It is being delay for abnormal stop during 0 minutes since the compressor has stopped. In this time, check delay code <40> will be displayed. Note) For first 7 minutes in COOL or HEAT starting, error detected pressure of highpressure pressure sensor is.4mpa. ) Outdoor unit short cycle 4) Outdoor heat exchanger dirt 5) Decrease in airflow capacity which the outdoor unit intakes because of intake defective of outer temperature thermistor. (Intake less than the actual outer air) 6) Indoor unit capacity codes miss setting (If the capacity code is set greatly, initial frequency rises and highpressure is easy to rise.) 7) Solenoid valve (SV) performance failure (High-pressure pressure cannot be controlled by SV) Check the outdoor unit. Check the outdoor unit heat exchanger. Check intake temperature of the outer temperature thermistor by LD. (See 506 Outer temperature thermistor error) Check the capacity set switch in the indoor controller board. If it is wrong setting reset it. Check is available for the outdoor unit. (See 70 Capacity code error) Check the solenoid valve performance. 8) Indoor thermistor (liquid pipe temperature detection) detecting failure (thermistor removed) (Hot adjust time becomes long.) 9) High-pressure pressure sensor defective Check the thermistor installed condition. Operate in trial mode and check the pipe temperature change by the remote controller. Check the high-pressure pressure sensor. 0) High-pressure pressure sensor input circuit defective in multi controller board. Check the high-pressure pressure sensor. 500 Refrigerant over charged abnormality ) Refrigerant over charged Check the refrigerant amount. When below 5 conditions are satisfied during the compressor operation (st detection), the compressor stops and restarts operation in minutes. ) Light-loaded operation (Wrong determination) Check the indoor/outdoor unit operating condition and status.. Cool mode, outer temp. is 0; or more ) Performance defective of the Heat mode, outer temp. is 5; or less indoor's linear expansion valve and outdoor's electronic expansion valve. Perform cool or heat operation to check the condition. 9

40 Display Meaning and detecting method Causes Check points 500. The compressor has operated consecutively 0 minutes or more, since the indoor unit operation capacity had changed (including the compressor operation start).. Operation frequency is 80Hz or more. 4. Discharge super heat is below 0;. 5. Sub cool step continues for 5 minutes or more by SN=4. Same condition as is satisfied again within 60 minutes since the compressor has stopped, it stops abnormally. In this time, <500> is displayed. Same condition as is satisfied again after 60 minutes since the compressor has stopped (st time), it becomes the first detection and same performance as. 4 It is being delay for abnormal stop during 60 minutes since the compressor has stopped. In this time, check delay code <600> will be displayed. 50 Refrigerant shortage abnormality When the conditions of below detecting mode or are satisfied (st detection) during the compressor operation, the compressor stops and restarts operation in minutes. <Detecting mode > When the below conditions are satisfied completely.. SW5-5 is OFF. 4) Discharge super heat detection error High-pressure pressure sensor failure Discharge temperature thermistor failure Thermistor input circuit defective in the multi controller board., and highpressure pressure sensor input circuit failure Check the high-pressure pressure sensor. Check the resistance of discharge temp. thermistor Set the SW to on and check the high-pressure pressure sensor level on Set the SW to and check the discharge temp. thermistor level. When the high-pressure pressure sensor and discharge temp. thermistor are normal, if the above mentioned detecting pressure level and temp. are big different from the actual pressure and temp., replace the multi controller board. ) Gas leakage, Gas shortage Check the refrigerant amount. ) When heating operation, refrigerant shortage feeling operation (When heating, air flow or thermo OFF are mixed-operation, it cause a refrigerant shortage operation.) ) Ball valve performance failure (not full opened.). Compressor is operating in HEAT mode. 4) Error detection of discharge super. Discharge super heat is 60; or more. heat 4. Difference of outer temperature thermistor (TH6) and outdoor piping temp. thermistor (TH5) applies to the formula of (TH6-TH5)<5;. 5. High-pressure pressure sensor is below.08mpa. <Detecting mode > When the below conditions are satisfied completely.. Compressor is operating.. When cooling, discharge super heat is 70; or more. When heating, discharge super heat is 95; or more. When the conditions of detecting mode and are satisfied again (nd detection) within 0 minutes since the compressor has stopped, it stops abnormally. In this time, <50> is displayed. When the conditions of detecting mode and are satisfied again after 0 minutes since the compressor has stopped (st time), it becomes the st detection and same performance as above. 4 It is being delay for abnormal stop during 0 minutes since the compressor has stopped. In this time, check delay code <600> will be displayed. High-pressure pressure sensor defective Discharge temperature thermistor defective Thermistor input circuit defective and high-pressure pressure sensor defective in multi controller board 5) Error detection of TH5/TH6 Thermistor defective Thermistor input circuit defective in multi controller board Check the operation condition and refrigerant amount. Check the ball valve is full opened. Check the high-pressure pressure sensor. Check the resistance of discharge temperature thermistor Set the SW to on and check the high-pressure pressure sensor level Set the SW to on and check the discharge temp. thermistor level. When the high-pressure pressure sensor and discharge temp. thermistor are normal, if the above mentioned detecting pressure level and temp. are big different from the actual pressure and temp. replace the multi controller board. Check the resistance of thermistor on Set the SW to and check the outdoor pipe temp. thermistor level on Set the SW to and check the outer temp. thermistor level. 40

41 Display Meaning and detecting method Causes Check points 505 Vacuum operation protection When the suction pressure saturation temperature thermistor (TH) detects -; or less and ''[indoor temperature-liquid pipe temperature][ 8deg'' for minutes continuously, the st COOL operation (compressor operation) after power supply on, it stops abnormally. In this time, <505> is displayed ) Ball valve performance failure (not full opened.) ) Light-loaded operation (When outer temperature is low, the operation is liable to change to this mode.) ) Low-pressure over suction by refrigerant shortage 4) Pipe clogging and broken 5) Indoor linear expansion valve performance defective Check the ball valve is full opened. Check the indoor/outdoor unit operating condition and status. Check the refrigerant amount. Repair the defective points. Perform cool or heat operation to check the condition. 50 Drain pump abnormality When either of the undermentioned condition is satisfied (when determined drain sensor goes under water) while the indoor unit operation (excluding the case of abnormal stop) and after minutes since the drain pump has operated, the indoor unit stops abnormally (however fan continues the normal control). In this time, <50> is displayed. Turn on the side heater of drain sensor, then when temperature up from the detected temperature before turning on is below 0; during 40 seconds. ) Drain pump trouble Check the drain pump. Performance ) Drain defective Please confirm whether water can be Drain pump clogging drained. Drain pipe clogging ) Open circuit of drain sensor side heater 4) Contact failure of drain sensor connector Confirm the resistance of the drain sensor side heater. (approx. 8'at normal between connector CN50 and in the indoor controller board) Check the connector contact failure. The detected temperature is below 6; after 40seconds since the side heater of drain sensor has turned on. 5) Dew condensation on drain sensor Drain water descends along lead wire. Drain water waving due to filter clogging. Check the drain sensor lead- wire mounted. Check the filter clogging 6) Indoor controller board defective If the above mentioned checkpoints has any problem, replace the indoor Drain pump drive circuit failure controller board. Drain heater output circuit failure When condition which the outdoor unit is stopped forcibly consists, or the drain sensor detects continuously to go under water 5 times, and also detects ''[liquid pipe temperature-suction temperature][ -0deg'' for 0minutes continuously, the indoor unit stops abnormally (however, fan operates by normal control) that indoor unit and excluding [Fan mode or OFF] in same refrigerant system. Also, the outdoor unit which is connected to that indoor unit with refrigerant system stops abnormality (compressor is inhibited to operation). In this time, <50> is displayed. 7) Both of above mentioned )~6) and the indoor linear expansion valve fullclosed failure (leakage) happens synchronistically. Check whether the indoor linear expansion valve leaks or not. 4

42 Display Meaning and detecting method Causes Check points 50 Drain pump abnormality (Note) Address/Attribute displayed on the remote controller shows the indoor unit which is cause of trouble. <Detected timing> Always detecting regardless of the indoor unit status. <Abnormality clear> Abnormality is cleared by either of two of the following; Reset power supply of the indoor unit and outdoor unit in same refrigerant system, which is the cause of trouble in the refrigerant system. Reset power supply of the indoor unit, which is the cause of trouble. (However, power supply interception of 0 minutes or more is necessary.) (Note) Above and detects independently. 50 Drain sensor (THd, DS) abnormality When the drain sensor detects short/open while the operation. Short: detection of 90; or more Open: detection of -40; or less ) Connector (CN50) contact failure (insertion failure) ) Thermistor wiring disconnection or half disconnection Check whether the indoor controller board connector (CN50) is disconnected or not. Check whether the thermistor wiring is disconnected or not. ) Thermistor defective Check the resistance of thermistor. 0; 5k' 0; 9.6 k' 0; 6. k' 0; 4. k' 45 Power supply synchronous signal abnormality When power supply synchronous signal (once a second) is not read, stop the compressor and restarts operation in minutes. (When the synchronous signal is not read at just before of compressor start, the compressor does not start and stops operation minutes.) For 0minutes after the compressor stop (PUMY-P5VMA PUMY-P5VMA : 4minutes), it is being to delay abnormal stop. Then, when SW is set, the outdoor units address No. and check code <465> blinks on the 4 digit digital display alternately. SW setting on When power supply synchronous signal (once a second) is not read again during abnormal delay, the compressor stops abnormally. Then, the outdoor units address No. and check code <45> blinks on the 4 digit digital display alternately. 4) Indoor controller board (detecting circuit) failure ) Disconnection or contact failure by loose of connector (CN) is connected to power supply board. ) Power supply synchronous detected circuit failures in the power supply board. ) Power supply synchronous detected circuit failure in the multi controller board. 4 40;.0 k' If abnormality is not found in the method of the above-mentioned from to, it is defective of the indoor controller board. Check the connector insertion. Replace the power supply board. Replace the multi controller board. 4

43 Display Meaning and detecting method Causes Check points 46 Fan rotational frequency abnormality (Detected only PKFY-P VAM-A) When rotational frequency of the fan is detected 80rpm or less, or 000rpm or more (st detection) while the indoor unit fan operation, the fan stops for 0seconds. When the rotational frequency of the fan is detected 80rpm or less, or 000rpm or more again after the fan restarts, the indoor unit stop abnormally (fan stops). In this time, <46> is displayed. ) Fan rotational frequency detecting connector (CN) disconnection in the indoor controller board. ) Fan output connector (FAN) disconnection in the indoor power board. ) Fan rotational frequency detecting connector (CN) wiring breakage in the controller board or fan output connector (FAN) breakage in the indoor power board Check whether the connector (CN) in the indoor controller board is disconnected or not. Check whether the connector (FAN) in the indoor power board is disconnected or not. Check whether the wiring is disconnected or not. 4) Filter clogging 4 Check the filter. 5) Indoor fan motor trouble 5 Check the indoor fan motor. 40 PUMY-P5VMA PUMY-P5VMA Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit Abnormal if any of followings are detected during compressor operation; Decrease of DC bus voltage to 70V Instantaneous decrease of DC bus voltage to 00V Increase of DC bus voltage to 400V 6) Fan rotational frequency detecting circuit failure in the indoor controller board or fan output circuit failure in the indoor power board. ) Decrease of power supply voltage ) Disconnection of compressor wiring ) Defective 5C 4) Disconnection or loose connection of CN5C 5) Defective active filter module (ACTM) 6) Defective active filter module (ACTM) drive circuit of outdoor power board 7) Disconnection or loose connection of CNAF 8) Defective 5C drive circuit of outdoor control board 9) Disconnection or loose connection of CN5 0) Disconnection or loose connection of CN 6 When there is no problem in the above-mentioned from to 5; () In the case of abnormality after the fan operation; Replace the indoor controller board. When the fan does not recover even if the indoor controller board is replaced, replace the indoor power board. () In the case of abnormality without fan operation, replace the indoor power board. Check the facility of power supply. Correct the wiring (U V W phase) to compressor. Replace 5C. 4 Check CN5C wiring. 5 Replace active filter module (ACTM). 6 Replace outdoor power board. 7 Check CNAF wiring. 8 Replace outdoor controller board. 9 Check CN5 wiring. 0 Check CN wiring. 4

44 Display Meaning and detecting method Causes Check points 40 PUMY-P5YMA PUMY-P5YMA Shortage abnormality of inverter bus-bar voltage When direct current bus-bar voltage reduces extremely during the compressor operation, the compressor stops and restarts operation in minutes. It is being delay to stop abnormally for 0 minutes after the compressor stop. Then, when SW is set, the outdoor unit address No. and check code <40> blinks alternately on the 4 digit digital display. SW setting on When detecting abnormality of direct busbar voltage decrease again during being delay abnormality, it performs the same action as. Also, when the abnormality is not detected, it operates normally. Hereafter, action is repeated until 5th abnormal detection. ) Power supply terminal voltage is low. Measure the terminal voltage, and check whether the voltage decreases or not. ) Power supply L,L-phase is opened. ) Diode stack (Diode module) defective. 4) Connector lead wire disconnection, contact failure. Power supply board connecting connector (CND)-Between smoothing capacitor (CB and CB). Power supply board connecting connector (5C)-Between electronmagnetic contactor (5C) 5) Connector (CN) disconnection, contact failure. Check the power supply is opened. Check the resistance of diode stack. Check the defective points. Check the connector insertion. 6) Instant power failure It happens by accident, and does not have the possibility to happen again. 4 When the 6th voltage decrease of direct bus bar is detected during being delay abnormality, it stops abnormally. In this time, the outdoor unit address No. and check code <40> blinks alternately on the 4 digit digital display. 7) Lightening serge, single interruption by external noise. 8) Direct bus-bar voltage shortage detecting circuit failure in power supply board It happens by accident, and does not have the possibility to happen again. Replace the power supply board. 40 Radiator panel shield temperature When the radiator panel temperature thermistor (THHS(A/B)) detects abnormality (w detection) stops the outdoor unit once and restarts operation in minutes. It is being delay to stop abnormally for 0minutes after the compressor stop. (PUMY-P5VMA PUMY-P5VMA : 0 minutes) Then, when SW is set, outdoor unit address No. and check delay code <40> blinks alternately on the 4 digit digital display SW setting on 4 When the radiation shield temperature thermistor (THHS(A/B)) detects abnormality again (nd detection) during delay abnormality, perform the same action as. When the radiation shield temperature thermistor (THHS(A/B)) detects abnormality on rd time during delay abnormality, it stops abnormally. (PUMY-P5VMA PUMY-P5VMA : 5 minutes) Then, the outdoor unit address No. check code <40> blinks alternately on the 4 digit digital display. ) Outdoor fan motor lock Check the outdoor fan motor. ) Outdoor fan motor trouble Check the outdoor fan motor. ) Block of duct which cooled air passes Check whether the air duct for cooling is opened. 4) Surrounding temperature-rise Check whether there is a heat source in surroundings of the outdoor unit. (Surroundings temperature upper limit is 46;) 5) Thermistor failure Check the resistance of thermistor. (Use tester) 6) Thermistor input circuit failure in the multi controller board on Change the SW to and check the temperature in radiation shield temperature thermistor. When there is a big difference between the detected temp. and thermistor temp. replace the multi controller board. Abnormality detecting temperature in radiation shield temperature thermistor Type 5VMA/VMA 5YMA/YMA Abnormal temperature (;)

45 Display Meaning and detecting method Causes Check points 450 IPM abnormality Over current limited PUMY-P5YMA PUMY-P5YMA ) Single interruption by external noise. (When the compressor is interrupted by over current at its start-up.) 4 When the compressor is interrupted again by over current after restarting in minutes, it stops and restarts in minutes. Perform the same action as and. 5 When the compressor is not interrupted within 0seconds after restarting in minutes, clear the delay of limited abnormal stop and back to normal. 6 When over current limit is detected within 0seconds from start-up, the compressor stops and restarts in minutes. While the compressor stops for minutes, confine the current-carry. When SW setting during delay of interruption abnormality stop, the outdoor unit address No. and check delay code <450> blinks alternately on the 4 digit digital display SW setting on When the above action 4 is repeated and the compressor is interrupted within 0seconds after 7th start-up (PUMY-P5VMA PUMY-P5VMA: after 5th start-up), or the compressor is interrupted during confined the current-carry, it stops abnormally. Then, the outdoor unit address No. and check delay code <450> blinks alternately on the 4 digit digital display. (When the compressor is interrupted by over current during the operation) When over current limit is detected after 0seconds from start-up, the compressor stops and restarts in minutes. The compressor is being delay to stop abnormally for 5minutes after the compressor stop. (PUMY-P5VMA PUMY-P5VMA : 6minutes) Then, the outdoor unit address No. and check delay code <450> blinks alternately on the 4 digit digital display SW setting on When the compressor is interrupted again within minutes after restarting in minutes, it stops abnormally. Then, the outdoor unit address No. and check delay code <450> blinks alternately on the 4 digit digital display. PUMY-P5VMA PUMY-P5VMA : 6minutes, 4minutes. 4 When the compressor is not interrupted within minutes (PUMY-P5VMA PUMY- P5VMA : minutes) after restarting in minutes, it becomes the st detection and performs the same action as and. ) Single interruption by lightening serge ) Power supply abnormality (a) Voltage decrease to 40V or less. (b) Power supply open-phase (Current increase in the compressor by the voltage decrease) 4) Diode stack defective When it is opened-phase, same phenomenon occurs as power supply open-phase. 5) Disconnection of connector and lead wire, and miss-wiring Between multi controller board (CN4) and power supply board (CN4) 6) IPM (intelligent power module) drive circuit in the gate amplifier defective 7) IPM (intelligent power module) drive signal output circuit defective, power factor detecting circuit failure in the multi controller board. 8) Current detection defective (ACCT) 9) Compressor lock 0) Liquid sealing start-up of the compressor ) Open-phase at the compressor side ) IPM (intelligent power module) failure ) Power supply board abnormality detecting circuit failure and IPM drive power supply circuit failure 45 Check whether the phase is opened or not. Check from 4) to ) by following procedure; Start-up the compressor and check the status of interrupting. () When the compressor stops (output signal stop) after immediately after output signal comes out and is interrupted abnormally. Generation of short-circuit current is assumed. (5),6),7),),)) () After 5seconds of start-up, when the compressor stops by interruption, being delay and repeats to confine current-carry for minutes restartup interruption to confine current-carry restart-up and becomes interruption-abnormality after approx. 8minutes from start-up. The compressor is assumed not to start-up by torque shortage or lock. (5), 6), 7), 9), 0), ), )) () When the compressor stops after a while by the interception though the compressor starts once, and restarts in minutes. It is presumed to stop since the frequency goes up and the load grows though the compressor starts. (4), 5), 6), 7), 8)) 4 Check the miss-wiring, terminal loosing and disconnection of connector and lead wire. Repair of defective points. (5), )) 5 Check the resistance of IPM. In the case of abnormality, replace the gate ampere board and IPM. 6 Check the resistance of diode stack. 7 The interruption happens by accident. Since the interception only once returns automatically after restarting in minutes, the possibility to stop abnormally is very few. Measure a receiving voltage and check the power supply capacity In the case of abnormality, replace the diode stack. When excluding of 456, Switch off and disconnect the connection of the compressor after confirming charge of main circuit electrolysis capacitor is discharged enough. Then, switch on and operate in no-load. () When the compressor is interrupted again. Replace the power supply board when the compressor does not back to normal even if the gate amplifier board is replaced. Replace the multi controller board when the compressor does not back to normal even if the power supply board is replaced. () Check the balance of inverter output voltage. If it is unbalanced, Replace the power supply board when the compressor does not back to normal even if the gate ampere is replaced. Replace the multi controller board when the compressor does not back to normal even if the power supply board is replaced. To be continued on the next page.

46 From the preceding page. Display Meaning and detecting method Causes Check points When not applying from 4 to 7, it applies to 9) and 0). Check the compressor. In case of 0), recheck the compressor again after hours with former power supply. PUMY-P5VMA PUMY-5VMA ) Stop valve of outdoor unit is closed. Open stop valve. ) Decrase of power supply voltage ) Looseness, disconnection or converse of compressor wiring connection 4) Defective fan of indoor/outdoor units 5) Short cycle of indoor/outdoor units 6) Defective input circuit of outdoor controller board 7) Defective compressor Check facility of power supply. Correct the wiring (U V W phase) to compressor. 4 Check indoor/outdoor fan. 5 Solve short cycle. 6 Replace outdoor controller board. 7 Check compressor. 50 Suction temperature thermistor (TH) abnormality When controller detects short (high temp.)/open (low temp.) in thermistor during the operation, the operation stops and the operation changes to protect mode of restarting in minutes. If the thermistor does not recover in minutes, the operation stops abnormally. In this time, <50> is displayed. Then, if the thermistor recover in minutes, it operates normally. Short: Detected 90; or more Open: Detected 40; or less Discharge temperature thermistor (TH) abnormality When controller detects short/open in thermistor during the operation, the outdoor unit stops once and restarts operation in minutes. When the detected temperature is normal at just before of restarting, the outdoor unit restarts. When controller detects short/open in thermistor at just before of restarting, the unit stops abnormally. In this time, <50> is displayed. While the compressor is protected not to restart in minutes, the unit is delayed abnormal stop. Then, the outdoor unit address No. and check delay code <0> blinks alternately on the 4 digit digital display. SW setting on 4 For 0 minutes after starting compressor, for defrosting or for minutes after recover of defrosting, above-mentioned short/open are not detected. Short: 6;or more (k') Open: 0; or less (700k') Note) When outer temperature thermistor (TH6) is 5; or less on cooling, open detecting is not determined as abnormality. ) Connector (CN0) contact failure Check whether the connector (CN0) in the indoor controller board is connected or not. ) Thermistor wiring disconnection or Check whether the thermistor wiring half disconnection is disconnected or not. ) Thermistor failure Check the resistance of thermistor; 0; 5k' 0; 9.6k' 0; 6.k' 0; 4.k' 40;.0k' 4) Detecting circuit failure in the indoor controller board 4 When there is no problem in above mentioned,replace the indoor controller board. ) Connector (TH) contact failure Check whether the connector (TH) in the multi controller board is connected or not. ) Thermistor wiring disconnection or half disconnection Check whether the thermistor wiring is disconnected or not. ) Thermistor failure Check the resistance of thermistor; When the resistance is not below value, replace the thermistor. 0; about 700k' 0; about 40k' 0; about 50k' 0; about 60k' 40; about 04k' ) Multi controller board input circuit 4 Set the SW to on failure When the temperature in multi controller board is not an actual temperature, replace the multi controller board : Open 999.9: Short 46

47 Display Meaning and detecting method Causes Check points 50 Liquid pipe temperature thermistor (TH) abnormality When the thermistor detects short/open during the operation, the operation stops and the operation changes to protect mode of restarting in minutes. If the thermistor does not recover in minutes, the operation stops abnormally. In this time, <50> is displayed. Then, if the thermistor recover in minutes, it operates normally. Short: Detected 90; or more Open: Detected -40; or less ) Connector (CN) contact failure Check whether the connector (CN) in the indoor controller board is connected or not. ) Thermistor wiring disconnection or half disconnection ) Thermistor failure Check whether the thermistor wiring is disconnected or not. Check the resistance of thermistor; 0; 5k' 0; 9.6k' 0; 6.k' 0; 4.k' 40;.0k' 4) Detecting circuit failure in the indoor controller board 4 When there is no problem in above mentioned,replace the indoor controller board. Low pressure saturation temperature thermistor (TH) abnormality When controller detects short/open in thermistor during the operation, the outdoor unit stops once and restarts operation in minutes. When the detected temperature is normal at just before of restarting, the outdoor unit restarts. When controller detects short/open in thermistor at just before of restarting, the unit stops abnormally. In this time, <50> is displayed. While the compressor is protected not to restart in minutes, the unit is delayed abnormal stop. Then, the outdoor unit address No. and check delay code <> blinks alternately on the 4 digit digital display. SW setting on ) Connector (TH) contact failure Check whether the connector (TH) in the multi controller board is connected or not. ) Thermistor wiring disconnection or half disconnection Check whether the thermistor wiring is disconnected or not. ) Thermistor failure Check the resistance of thermistor; 0; 5k' 0; 9.6k' 0; 6.k' 0; 4.k' 40;.0k' 4 For 0 minutes after starting compressor, for defrosting or for minutes after recover of defrosting, above-mentioned short/open are not detected. Short: 00; or more (0.5k') Open: -46; or less (00k') 4) Multi controller board input circuit failure 4 Set the SW to on When the temperature in multi controller board is not an actual temperature, replace the multi controller board : Open 999.9: Short 47

48 Display Meaning and detecting method Causes Check points 50 Gas pipe temperature thermistor (TH) abnormality When the thermistor detects short/open after minutes-continuous thermo ON during cooling or dry operation, the operation stops and the operation changes to protect mode of restarting in minutes. If the thermistor does not recover in minutes, the the operation stops abnormally. In this time, <50> is displayed. Then, if the thermistor recover in minutes, it operates normally. Short: Detected 90; or more Open: Detected -40; or less ) Connector (CN9) contact failure Check whether the connector (CN9) in the indoor controller board is connected or not. ) Thermistor wiring disconnection or half disconnection Check whether the thermistor wiring is disconnected or not. ) Thermistor failure Check the resistance of thermistor; 0; 5k' 0; 9.6k' 0; 6.k' 0; 4.k' 40;.0k' 4) Detecting circuit failure in the indoor controller board 4 When there is no problem in above mentioned,replace the indoor controller board. 505 Pipe temperature / judging defrost thermistor (TH5) abnormality When controller detects short/open in thermistor during the operation, the outdoor unit stops once and restarts operation in minutes. When the detected temperature is normal at just before of restarting, the outdoor unit restarts. When controller detects short/open in thermistor at just before of restarting, the unit stops abnormally. In this time, <505> is displayed. While the compressor is protected not to restart in minutes, the unit is delayed abnormal stop. Then, the outdoor unit address No. and check delay code <05> blinks alternately on the 4 digit digital display. SW setting on ) Connector (TH5) contact failure Check whether the connector (TH5) in the multi controller board is connected or not. ) Thermistor wiring disconnection or half disconnection Check whether the thermistor wiring is disconnected or not. ) Thermistor failure Check the resistance of thermistor; When the resistance is not below value, replace the thermistor. 0; 5k' 0; 9.6k' 0; 6.k' 0; 4.k' 4 For 0 minutes after starting compressor, for defrosting or for minutes after recover of defrosting, above-mentioned short/open are not detected. Short: 88; or more (0.4k') Open: -9; or less (5k') 4) Multi controller board input circuit failure 40;.0k' on 4 Set the SW to When the temperature in multi controller board is not an actual temperature, replace the multi controller board : Open 999.9: Short 48

49 Display Meaning and detecting method Causes Check points 506 Outdoor temperature thermistor (TH6) abnormality When controller detects short/open in thermistor during the operation, the outdoor unit stops once and restarts operation in minutes. When the detected temperature is normal at just before of restarting, the outdoor unit restarts. When controller detects short/open in thermistor at just before of restarting, the unit stops abnormally. In this time, <506> is displayed. While the compressor is protected not to restart in minutes, the unit is delayed abnormal stop. Then, the outdoor unit address No. and check delay code <> blinks alternately on the 4 digit digital display SW setting on 4 For 0 minutes after starting compressor, for defrosting or for minutes after recover of defrosting, above-mentioned short/open are not detected. Short: 88; or more (0.4k') Open: -9; or less (5k') ) Connector (TH6) contact failure Check whether the connector (TH6) in the multi controller board is connected or not. ) Thermistor wiring disconnection or half disconnection Check whether the thermistor wiring is disconnected or not. ) Thermistor failure Check the resistance of thermistor; When the resistance is not below value, replace the thermistor. 4) Multi controller board input circuit failure 0; 5k' 0; 9.6k' 0; 6.k' 0; 4.k' 40;.0k' Set the SW to on When the temperature in multi controller board is not an actual temperature, replace the multi controller board : Open 999.9: Short 50 PUMY-P5VMA, PUMY-P5VMA: Radiator panel temperature thermistor (THHS-A, THHS-B) abnormality PUMY-P5YMA, PUMY-P5YMA: IPM radiator panel temperature thermistor (THHS) abnormality When controller detects short/open in thermistor during the operation, the outdoor unit stops once and restarts operation in minutes. When the detected temperature is normal at just before of restarting, the outdoor unit restarts. When controller detects short/open in thermistor at just before of restarting, the unit stops abnormally. In this time, <50> is displayed. ) Connector (THHS(A/B)) contact failure ) Thermistor wiring disconnection or half disconnection Check whether the connector (THHS(A/B)) in the multi controller board is connected or not. Check whether the thermistor wiring is disconnected or not. While the compressor is protected not to restart in minutes, the unit is delayed abnormal stop. Then, the outdoor unit address No. and check delay code <4> blinks alternately on the 4 digit digital display SW setting on 4 For 0 minutes after starting compressor, for defrosting or for minutes after recover of defrosting, above-mentioned short/open are not detected. (PUMY-P5YMA, PUMY-P5YMA) PUMY-P5VMA, PUMY-P5VMA: Short:0; or more (.9k') Open: -7; or less (950k') ) Thermistor failure Check the resistance of thermistor; When the resistance is not below value, replace the thermistor. 4) Multi controller board input circuit failure 0; 80k' 0; 05k' 0; 6k' 0; 9k' 40; 5k' Set the SW to on When the temperature in multi controller board is not an actual temperature, replace the multi controller board : Open 999.9: Short PUMY-P5YMA, PUMY-P5YMA: Short:; or more (.k') Open: -0; or less (00k') 49

50 Display Meaning and detecting method Causes Check points 50 Pressure sensor (6HS) abnormality When detected pressure in high-pressure pressure sensor is MPa or less during the operation, the compressor stops and restarts operation in minutes. When the detected pressure is MPa or less at just before of restarting, the compressor stops abnormally. In this time, <50> is displayed. For minutes after the compressor stops, the unit delays to abnormal stop. Then, the outdoor unit address No. and check delay code <40> blinks alternately on the 4digit digital display SW setting on 4 For minutes after starting compressor, for defrosting or for minutes after recover of defrosting, abnormality is not determined as abnormality. 500 Current sensor error (PUMY-P5VMA PUMY-P5VMA) Abnormal if current sensor detects.5a to.5a during compressor operation. (This error is ignored in case of SW6- ON.). When input current sensor on N.F. circuit board detects 4A or more, compressor stops and restarts in minutes.. When the sensor detects 4A or more again (nd detection) within 0 minutes, since the compressor has stopped, the compressor stops again and restarts operation in minutes.. When the sensor detects 4A or more again (0th detection) within 0 minutes, it stops abnormally. In this time <500> error is displayed. 4. It is being delay for abnormal stop during 0 minutes since the compressor has stopped. In this time, check delay code <550> will be displayed Duplex address error Detected error when transmission of unit with the same address is confirmed, Note) Address/Attribute displayed on the remote controller shows the controller detecting abnormality. 660 Transmission processor H/W error '' '' shows on the transmission line though the transmission processor transmitted '' 0''. Note) Address/Attribute displayed on the remote controller shows the controller detecting abnormality. ) High-pressure pressure sensor failure ) Internal pressure decrease by gas leakage ) Connector contact failure, disconnection 4) Multi controller board input circuit failure ) Disconnection of compressor wiring ) Defective circuit of current sensor on outdoor power board ) Low voltage supplied to power supply terminal block. ) There are units or more with the same address among the outdoor unit or indoor unit or lossnay controller, remote controller. ) When noise has occurred in the transmission signal, and the signal has changed. ) When the wiring for either of the indoor unit, the outdoor unit or lossnay transmission line is constructed or polarity is changed with the power supply turned on, the transmission waves change in case that the transmission data collides mutually. It causes to detect error. ) Transmission processor circuit failure ) When the transmission data has changed by the noise. 4 Check the high-pressure pressure sensor. Check the internal pressure. Check the high-pressure pressure sensor. Check the high-pressure pressure sensor. Correct the wiring (U V W phase) to compressor. Replace outdoor power board. Check the facility of power supply. Look for the unit, which is source of abnormality with the same address. When the same address is found, correct the address and turn off power supply of outdoor unit, indoor unit, and lossnay for minutes or more as the same time. Then, turn on power supply. Check the transmitted wave and the noise on the transmission line. When the transmission line is constructed with the current flowed, turn off power supply of outdoor unit, indoor unit and lossnay for minutes or more as the same time. Then, turn on power supply. Check the transmitted wave and the noise on the transmission line. 50

51 Display Meaning and detecting method Causes Check points 660 Transmission bus busy error Over error by collision Abnormality when the state, which cannot be transmitted by collision of transmission, is consecutive for 8 to 0minutes. ) The transmission processor cannot be transmitted since a short cycle voltage of the noise etc. mixes on the transmission line consecutively. Check whether the transmission line of the indoor unit, fresh master, lossnay and remote controller is connected to the outdoor unit terminal board (TB7) for centralized controller or not. The state that data cannot to be output to the transmission line by the noise happens for 8 to 0minutes consecutively. Note) Address/Attribute displayed on the remote controller shows the controller detecting abnormality. ) The transmission volume increases and cannot be transmitted since the wiring method is mistaken and the routing technique to the terminal board (TB) for the transmission line of the outdoor unit and the terminal board (TB7) for centralized control cannot be transmitted. Check whether the transmission line with the other refrigerant system of the indoor unit and lossnay is connected to the outdoor unit terminal board (TB) for transmission or not. ) The share becomes high since the data exists together to other transmitted data by a defective repeater (function which connects and intercepts the transmission of controlling system and centralized control system), and it causes abnormal detection. 4 Check whether the outdoor unit terminal board for transmission line (TB) and for centralized controller (TB7) are connected or not. Check the transmitted wave and the noise on the transmission line Signal communication error with transmission processor Signal communication error between unit processor and transmission processor Note) Address/Attribute displayed on the remote controller shows the controller detecting abnormality. ) It happened since the noise and lightening serge that happened by chance had not normally transmitted the data of the unit/transmission processor. Turn off power supply of outdoor unit, indoor unit, and lossnay for minutes or more at the same time. Then, turn on power supply. It recovers normally at the malfunction that happens by chance. When same abnormality occurs again, it is defective of a generation former controller. ) The address transmission from the unit processor was not normally transmitted by the hardware of transmission processor defective. 5

52 Display Meaning and detecting method Causes Check points 6607 No ACK (Acknowledgement) Factor that not related to origin Abnormality which controller of the ) Since the address switch was Turn off power supply of outdoor unit, sending side detects when there is no changed with the current passed, the indoor unit fresh master and lossnay answer (ACK) from other side though data unit in the last address does not exist. for minutes or more at the same was transmitted once. It is detected 6 time. Then, turn on power supply. It times every 0seconds continuously. recovers normally at the malfunction that happens by chance. Note) Address/Attribute displayed on the remote controller shows the controller, which did not send back replay (ACK). ) Decline of transmission voltage and signal by transmission line tolerance over The furthest point 00m Remote controller line (m) (See page 6- for details) ) Decline of transmission line voltage and signal by unmatched kind of line. Kind Shield line-cvvs,cpevs No shield VCTF, VCTFK, CVV, CVS, VVR, VVF, VCT Line diameter.5 e or more 4) Decline of transmission line voltage and signal by a number of overconnected units. 5) Miss operation of origin controller, which happens by chance. 6) Origin controller defective Check the address switch in the address, which occurs abnormality. Check whether the transmission line is connected / loosen or not at origin. (Terminal board or connector) 4 Check whether the transmission line tolerance is over or not. 5 Check whether the kind of transmission line is mistaken or not. When there is any trouble from above -5, turn off power supply of outdoor unit, indoor unit and lossnay for minutes or more at the same time. Then, turn on power supply. ) When the cause of displayed address and attribute is on the outdoor unit side (The indoor unit detects when there is no reply (ACK) on transmitting from the indoor unit to the outdoor unit.) ) When the cause of displayed address and attribute is on the indoor unit side (The remote controller detects when there is no reply (ACK) on transmitting from the remote controller to the indoor unit.) ) Contact failure of outdoor unit or indoor unit transmission line ) Indoor unit transmission connector (CNM) disconnection ) Sending/receiving signal circuit failure in the indoor/outdoor unit ) When operating with multi refrigerant system indoor units, the remote controller transmits the signal to the indoor unit after the other refrigerant system outdoor unit is turned off or turned on again in minutes, and detects abnormality. ) Contact failure of remote controller or indoor unit transmission line. ) Indoor unit transmission connector (CNM) disconnection. 4) Sending/receiving signal circuit failure in the indoor unit or remote controller. When there is not any trouble in single refrigerant system (outdoor unit) from above-5, controller defective in displayed address and attribute. When there is not any trouble in different refrigerant system (outdoor unit or more) from above-5, determine it after 6. 6 When the address, which should not exist, is an origin, since there is the indoor unit which memorizes the address data, cancel the unnecessary address data by the manual setting function of remote controller. However, they are limited to the system, which sets the group between different refrigerant systems, or which fresh master /lossnay are connected. When there is not any trouble from above -6, replace the displayed address/attribute controller board. In this time, when the error does not recover to normal, the outdoor unit multi controller board (repeater circuit) defective is expected. Check the recovery by replacing the multi controller board one by one. 5

53 Display Meaning and detecting method Causes Check points 6607 ) When the cause of displayed address and attribute is on the remote controller side (The indoor unit detects when there is no reply (ACK) on transmitting from the indoor unit to the remote controller unit.) ) When operating with multi refrigerant system indoor units, the indoor units transmits the signal to the remote controller after the other refrigerant system outdoor unit is turned off or turned on again in minutes, and detects abnormality. ) Contact failure of remote controller or indoor unit transmission line ) Indoor unit transmission connector (CNM) disconnection. 4) Sending/receiving signal circuit failure in the indoor unit or remote controller. 4) When the cause of displayed address and attribute is on the fresh master side (The indoor unit detects when there is no reply (ACK) on transmitting from the indoor unit to the fresh master.) ) When synchronized operating with other refrigerant system fresh master, the indoor units transmits the signal to the fresh master after the fresh master and same refrigerant system outdoor unit is turned off or turned on again in minutes, and detects abnormality. ) Contact failure of fresh master or indoor unit transmission line ) Indoor unit or fresh master transmission connector (CNM) disconnection. 4) Sending/receiving signal circuit failure in the indoor unit or fresh master. 5) When the cause of displayed address and attribute is on the lossnay side (The indoor unit detects when there is no reply (ACK) on transmitting from the indoor unit to the lossnay.) ) When the lossnay power supply is Off, the indoor unit detects abnormality at signal transmitting to the lossnay. 5

54 Display Meaning and detecting method Causes Check points 6607 ) When synchronized operating with other refrigerant system lossnay, the indoor units transmits the signal to the lossnay after the lossnay and same refrigerant system outdoor unit is turned off or turned on again in minutes, and detects abnormality ) Contact failure of lossnay or indoor unit transmission line 4) Indoor unit transmission connector (CNM) disconnection. 5) Sending/receiving signal circuit failure in the indoor unit or lossnay. 6) When the controller of displayed address and attribute is not recognized ) Since the address switch was changed with the current passed, the unit in the last address does not exist. ) Since the fresh master/lossnay address are changed after synchronized setting of fresh master / lossnay by the remote controller, abnormality is detected at transmitting from the indoor unit No response Though there was a replay (ACK) of having received signal from the other side, it is the abnormality when the response command does not return. The sending side detects the abnormality continuously six times every 0 seconds. Note) Address/Attribute displayed on the remote controller shows the controller, which did not response. ) Transmission repeats the failure by the noise etc. ) Decline of transmission voltage and signal by transmission line tolerance over. The furthest point 00m Remote controller line (m) (See page 6- for details) Check the transmission wave and noise on the transmission line. Turn off power supply of outdoor unit, indoor unit and lossnay for minutes or more at the same time. Then, turn on power supply again. It recovers normally at the malfunction that happens by chance. When same abnormality occurs again, it is defective of displayed address and attribute. ) Decline of transmission line voltage and signal by unmatched kind of line. Kind Shield wire-cvvs,cpevs No shield VCTF, VCTFK, CVV, CVS, VVR, VVF, VCT wire diameter.5eor more 4) Miss operation of origin controller, which happens by chance. 54

55 Display Meaning and detecting method Causes Check points 680 UR communication abnormality (UR: Unit Remote controller) Communications between the unit remote controller and indoor unit is not normal. When there is no display of address and attribute to the remote controller. (When detecting by the unit remote controller) ) It is abnormality though the unit remote controller transmitted ''H'', when "L" reception is detected continuously three times. ) It is abnormality when there is no response from the indoor unit for minutes against to ''monitor request'' from the unit remote controller. ) It is abnormality when there is no response times continuously from the indoor unit against to ''operation /setting'' from the unit remote controller. When the cause of displayed address and attribute is on the indoor unit side. ) It is abnormality though the indoor unit transmitted ''H'', when "L" reception is detected continuously three times. ) It is abnormality when the indoor units cannot receive the transmission signal from the unit remote controller for minutes. ) Contact failure of the unit remote controller transmission line in the unit remote controller or indoor unit. ) Decline of transmission voltage and signal on the unit remote controller transmission line by the unit remote controller transmission line tolerance over ) When the transmission signal of unit remote controller changes by noise. 4) Unit remote controller transmitting / receiving signal circuit failure in the unit remote controller or indoor unit. Check whether the transmission line of the indoor unit or unit remote controller is connected / loosen or not. Check whether the unit remote controller transmission line tolerance is over or not. Check the transmission wave and noise on the transmission signal of unit remote controller. 4 When there is not any trouble from above -, replace the indoor controller board or unit remote controller. Check of following conditions is available by LED/LED in the indoor controller board. When LED and blinks at the same time. The indoor unit is transmitting to the unit remote controller. When only LED blinks. The unit remote controller is transmitting to the indoor unit. Or, other indoor unit is transmitting to the unit remote controller. When LED and does not blink. The indoor unit and unit remote controller is not transmitting Signal reception abnormality (Remote controller) Following symptoms are regarded as abnormality. ) When the remote controller cannot receive the signal from indoor controller normally even once for minutes ) When sub-remote controller cannot receive the signal even once for minutes Signal transmission abnormality (Remote controller) Following symptoms are regarded as abnormality. ) When sub-remote controller cannot transmit the signal to the transmission path for 6 seconds Defect of the transmission and reception circuit of the remote controller. Defect of the transmission and reception circuit of the indoor controller board Noise occurs on the transmission line of the remote controller 4 All remote controllers are set as sub-remote controller. Defect of the transmission and reception circuit of the remote controller Noise occurs on the transmission line of the remote controller There are two main remote controllers. ~ Perform a check of the remote controller. According to the results, perform the following disposals. When "RC OK" is displayed The remote controller is normal. Turn off the power supply and turn it on again. If "HO" is displayed for 4 minutes or more, replace the indoor controller board. When "RC NG" is displayed Replace the remote controller. When "RC 68 or 68" or "ERC 00-66" is displayed These displays may be due to noise, etc. 4 Set one remote controller to main remote controller and the other to sub-remote controller. ) When the remote controller cannot finish transmitting the signal for 0 times on end 55

56 Display Meaning and detecting method Causes Check points 700 When connected total models of the ) Connecting total models of the Check the total models of connected indoor units exceed the specified level indoor unit exceed the specified level. indoor unit. (0% of the outdoor unit models), error code <700> is displayed. 5: Possible up to 6 (code ) Check the model code registration switch (indoor controller board SW) of connected indoor unit. ) There is a mistake in the registration of model name code of the outdoor unit. Check the model code registration switch (outdoor multi controller board SW4) of the outdoor unit. 70 Capacity code error When the connected indoor unit models cannot be connected, <70> is displayed. The indoor unit models is not possible to connect, The indoor unit of 0-5(code 4-5) is possible to connect. Check the model code registration switch (indoor controller board SW) in the connected indoor unit. The outdoor unit SW operation can check model code of the connected indoor units. Code of indoor unit No on Code of indoor unit No on Code of indoor unit No on Code of indoor unit No on Code of indoor unit No on Code of indoor unit No on Code of indoor unit No on Code of indoor unit No on 70 Number of connecting unit over When the connecting unit exceeds a number of limitations, error code <70> is displayed. Even if the indoor unit is not connected, becomes <70> is display. Connecting unit exceeds a number of limitations. It is assumed abnormality excluding the following cases; ) The indoor unit can be totally connected up to 8 units. The indoor unit can be connected up to 8 units ) Ventilation unit connecting is only unit. Check whether the connecting unit exceeds a number of limitations or not. 040 Serial communication error Abnormal if serial communication between outdoor multi board and outdoor power board is defective. Breaking of wire or contact failure of connector CN Breaking of wire or contact failure of connector CN4 Defective communication circuit of outdoor power board 4 Defective communication circuit of outdoor multi board for power board Check connection of each connector CN, CN4. Replace outdoor power board. 4 Replace outdoor multi board. 56

57 Display Meaning and detecting method Causes Check points 705 Address setting error Address setting of the outdoor unit is wrong. Addresses miss setting of the outdoor unit. The outdoor unit is not set in 000 or in the range of Check the address setting of the outdoor unit. The address should be set in 000 or When the setting is out of the range, reset it, turn off power supply of the outdoor unit, indoor unit and lossnay for minutes or more at the same time, and turn on power supply again. 7 Remote controller sensor abnormality When an old type remote controller for M-NET is used, and the remote In the case of network remote controller, it controller sensor is specified (SW- is an abnormality when incapable is ON). response returns from the net work remote controller during the operation. Replace the remote controller to net work remote controller. 9-. REMOTE CONTROLLER DIAGNOSIS MA remote controller is equipped with the diagnosis function. Check the remote controller with this function when the unit does not operate with the remote controller. () () First, check the electricity current maker. If the correct voltage (DC 8.7~V) is not supplied on the remote controller, the electric current marker will be lit. If the electricity current marker is not lit, check the remote controller wiring and the indoor units. Electric current marker () () Transfer to remote control diagnosis mode. Hold down the CHECK button for five seconds or more to display the diagram on the left. Press the FILTER button to commence diagnosis of remote controller. () a) b) () Remote controller diagnosis results. a) The remote control is functioning correctly. Check other possible causes as there are on problems with the remote controller. b) The remote controller has a nonconformity. The remote controller must be replaced. Error display ( NG ) flashes to show a nonconformity in the transmitter-receiver circuit. To be continued on the next page. 57

58 STAND BY DEFROST CLOCK From the preceding page. a) b) When the number of data errors generated is 0. Remote controller transmission data Transmission data at transmission path Potential problems other than those diagnosed for the remote controller. a) Single transmission not possible if error display ( 68 or 68 ) flashes. There is noise on the transmission line, or damage of other remote controller for the indoor units can be considered. Check the transmission path and other controller b) Data error has occurred when error display three shows ERC and number of data errors. Number of generated data error (maximum 66 errors). The number of generated data error stands for the difference in the number of bits of transmitted data from the remote controller and the actual number of bits that were transmitted along the transmission path. If this error occurs, noise, etc., is interfering with the transmission data. Check the transmission path. (4) Cancel the remote controller diagnosis. Hold down the CHECK button for five seconds or more to cancel the remote controller diagnosis. The HO operation lamp will flash, and the display screen will rectum to the status before remote controller diagnosis in approximately 0 seconds. 9-. REMOTE CONTROLLER TROUBLE CHECK CENTRALLY CONTROLLED ON OFF C ERROR CODE TEMP. Hr. C FILTER CHECK MODE TEST RUN NOT AVAILABLE FUNCTION ON/OFF indicator: Appears when current is carried. FILTER CHECK TEST PAR-0MAA TIMER SET () For M-NET remote controller systems Symptom or inspection code Cause Inspection method and solution Though the content of operation is displayed on the remote controller, some indoor units do not operate. Though the indoor unit operates, the display of the remote controller goes out soon. ( ) is not displayed on the remote controller. (M-NET remote controller is not fed.) "HO" keeps being displayed or it is displayed periodically. ("HO" is usually displayed for minutes at the longest after the power supply of the outdoor unit is on.) The remote controller does not operate though ( ) is displayed. The power supply of the indoor unit is not on. The address of the indoor units in same group or the remote controller is not set correctly. The group setting between outdoor units is not registered to the remote controller. The fuse on the indoor unit controller board is blown. The power supply of the indoor unit is not on. The fuse on the indoor unit controller board is blown. The power supply of the outdoor unit is not on. The number of connected indoor unit in the refrigeration system is over the limit or the number of connected remote controller is over the limit. M-NET remote controller is connected to MA remote controller cable. The transmission line of the indoor/outdoor unit is shorted or down. M-NET remote controller cable is shorted or down. The power supply for the feeding expansion unit for the transmission line is not on. The address of the outdoor unit remains "00". The address of the indoor unit or the remote controller is not set correctly. MA remote controller is connected to the transmission line of the indoor/outdoor unit. The transmission line of the indoor/outdoor unit is connected to TB5. The transmission line of the indoor/outdoor unit is shorted, down or badly contacted. Check the part where the abnormality occurs. The entire system In the entire refrigerant system In same group only 4 One indoor unit only <In case of the entire system or in the entire refrigerant system> Check the self-diagnosis LED of the outdoor unit. Check the items shown in the left that are related to the outdoor unit. <In case of in same group only or one indoor unit only> Check the items shown in the left that are related to the indoor unit. 58

59 () For MA remote controller systems Symptom or inspection code Cause Inspection method and solution Though the content of operation is displayed on the remote controller, some indoor units do not operate. Though the indoor unit operates, the display of the remote controller goes out soon. ( ) is not displayed on the remote controller. (MA remote controller is not fed.) "HO" keeps being displayed or it is displayed periodically. ("HO" is usually displayed for minutes at the longest after the power supply of the outdoor unit is on.) The remote controller does not operate though ( ) is displayed. The power supply of the indoor unit is not on. Wiring between indoor units in same group is not finished. The indoor unit and Slim model are connected to same group. The fuse on the indoor unit controller board is blown. The power supply of the indoor unit (Master) is not on. In case of connecting the system controller, the setting of the system controller does not correspond to that of MA remote controller. The fuse on the indoor unit (Master) controller board is blown. The remote controller is not fed until the power supply of both indoor unit and outdoor unit is on and the start-up of both units is finished normally. The power supply of the indoor unit is not on. The power supply of the outdoor unit is not on. The number of connected remote controller is over the limit (Maximum: units) or the number of connected indoor unit that is over the limit (Maximum: 6 units). The address of the indoor unit is "00" and the address for the outdoor unit is the one other than "00". The transmission line of the indoor/outdoor unit is connected to TB5. MA remote controller is connected to the transmission line of the indoor/outdoor unit. The remote controller cable is shorted or down. The power supply cable or the transmission line is shorted or down. The fuse on the indoor unit controller board is blown. The power supply of the outdoor unit is not on. The power supply of the feeding expansion unit for the transmission line is not on. The setting of MA remote controller is not main remote controller, but sub-remote controller. MA remote controller is connected to the transmission line of the indoor/outdoor unit. The power supply of the indoor unit (Master) is not on. The transmission line of the indoor/outdoor unit is connected to TB5. The transmission line of the indoor/outdoor unit is shorted, down or badly contacted. The fuse on the indoor unit controller board is blown. Check the part where the abnormality occurs. The entire system In the entire refrigerant system In same group only 4 One indoor unit only <In case of the entire system or in the entire refrigerant system> Check the self-diagnosis LED of the outdoor unit. Check the items shown in the left that are related to the outdoor unit. <In case of in same group only or one indoor unit only> Check the items shown in the left that are related to the indoor unit THE FOLLOWING SYMPTON DO NOT REPRESENT TROUBLE (EMERGENCY) Symptom Even the cooling (heating) operation selection button is pressed, the indoor unit cannot be operated. The auto vane runs freely. Fan setting changes during heating. Fan stops during heating operation. Fan does not stop while operation has been stopped. No setting of fan while start SW has been turned on. Indoor unit remote controller shows HO indicator for about two minutes when turning ON power supply. Drain pump does not stop while unit has been stopped. Drain pump continues to operate while unit has been stopped. Display of remote controller "Cooling (Heating)" blinks Normal display Normal display "Defrost " Light out STAND BY HO blinks Light out CAUSE The indoor unit can not cool (heat) if other indoor units are heating (cooling). Because of the control operation of auto vane, it may change over to horizontal blow automatically from the downward blow in cooling in cause the downward blow operation has been continued for one hour. At defrosting in heating, hot adjusting and thermostat OFF, it automatically changes over to horizontal blow. Ultra-low speed operation is commenced at thermostat OFF. Light air automatically change over to set value by time or piping temperature at thermostat ON. The fan is to stop during defrosting. Fan is to run for one minute after stopping to exhaust residual heat (only in heating). Ultra-low speed operation for 5 minutes after SW ON or until piping temperature becomes 5 C. There low speed operate for minutes, and then set notch is commenced. (Hot adjust control) System is being driven. Operate remote controller again after HO disappears. After a stop of cooling operation, unit continues to operate drain pump for three minutes and then stops it. Unit continues to operate drain pump if drainage is generated, even during a stop. 59

60 9-5. INTERNAL SWITCH FUNCTION TABLE Outdoor unit internal switch function table (PUMY-P5VMA PUMY-P5VMA) Switch SW U st digit SW U nd digit Step Rotary switch SWU (nd digit) 50 4 Function SWU (st digit) 50 4 Operation in Each Switch Setting ON OFF When to Set W The address automatically becomes "00" if it is set as "0~50" Before turning the power on Remarks <Factory Settings> SWU SWU (nd digit) (st digit) SW Digital Display Switching ~8 ON OFF Can be set <Factory Settings> either during operation or not. ON OFF Outdoor unit SW function Switching Selects operating system startup Doesn t start up Start up Connection Information Clear Switch Clear Do not clear Abnormal data clear switch input Clear abnormal data Normal Refrigerant Volume Adjustment Operation Run adjustment mode. Normal During the FAN or COOL mode, and thermo - OFF or OFF in heating operation, set the opening Active Inactive of linear expansion valve on indoor unit. During the FAN or COOL mode, and thermo - OFF in heating operation, set the opening of Active linear expansion valve on indoor unit. Forced defrost Forced defrost Defrost detection switching Defrost disabled time selection Vacuum operation protection (error Cumulative 60 min. Active Inactive Normal Continuous 0 min. (ordinary) Inactive Before turning the power on OFF to ON any time after the power is turned on. Can be set during compressor stopping. While unit stopping. OFF ON, during compressor running in heating mode. While unit stopping. <Factory Settings> ON OFF code 505) is not detected. SW Trial operation Enable/disable operation from outdoor unit ON/OFF from the outdoor unit. Enable ON Disable OFF Any time after the power is turned on. <Factory Settings> ON OFF w SW4 Model Switching ~4 Service ref. PUMY-P5VMA PUMY-P5VMA ON OFF SW4 4 Before the power is turned on. <Factory Settings> Set for each capacity. SW5 function switching SW6 function switching Auto Change Over from Remote Controller Enable Fixing the indoor units linear expansion valve opening Fix Fixing the outdoor unit electronic Fix expansion valve opening. Enable fixing at the desired frequency Enable Maintain outdoor fan at fixed speed and ignore outdoor temperature Active sensor abnormality Ignore refrigerant filling abnormality Active Switching the target discharge pressure (Pdm) Pdm switching Switching the target evaporation temperature (ETm) ETm switching Switching the Input Current Limit Level Amp down Switching the High Pressure Limit Level 0. MPS up Ignore current sensor error Active 60 Disable Normal Normal Disable Inactive Inactive Normal Normal Normal Normal Inactive Before the power is turned on. OFF ON while compressor is not operating Any time after the power is turned on. While unit stopping. Can be set when off or during operation Before turning the power on While unit stopping While unit stopping w For the system utilizing R-Converter units (PAC-SF9LB), SW trial operation function is not available. <Factory Settings> ON OFF <Factory Settings> ON OFF

61 9-5-. Outdoor unit internal switch function table (PUMY-P5YMA PUMY-P5YMA) Switch SW U st digit SW U nd digit SW U rd digit Step Rotary switch Function SWU (rd digit) 50 4 SWU (nd digit) 50 4 Operation in Each Switch Setting ON OFF When to Set SWU (st digit) 50 4 Before turning the power on Remarks <Factory Settings> SWU (rd digit) 50 4 SWU (nd digit) 50 4 SWU (st digit) 50 4 SW Digital Display Switching ~8 ON OFF Can be set <Factory Settings> either during operation or not. ON OFF Outdoor unit SW function Switching Selects operating system startup Doesn t start up Start up Connection Information Clear Switch Clear Do not clear Abnormal data clear switch input Clear abnormal data Normal Refrigerant Volume Adjustment Operation Run adjustment mode. Normal During the FAN or COOL mode, and thermo - OFF or OFF in heating operation, set the opening Active Inactive of linear expansion valve on indoor unit. During the FAN or COOL mode, and thermo - OFF in heating operation, set the opening of Active linear expansion valve on indoor unit. Forced defrost Forced defrost Defrost detection switching Defrost disabled time selection Vacuum operation protection (error Cumulative 60 min. Active Inactive Normal Continuous 0 min. (ordinary) Inactive Before turning the power on OFF to ON any time after the power is turned on. Can be set during compressor stopping. While unit stopping. OFF ON, during compressor running in heating mode. While unit stopping. <Factory Settings> ON OFF code 505) is not detected. SW Trial operation SW4 Model Switching ~4 Enable/disable operation from outdoor unit ON/OFF from the outdoor unit. Service ref. PUMY-P5YMA PUMY-P5YMA ON OFF SW4 4 Enable ON Disable OFF Any time after the power is turned on. Before the power is turned on. <Factory Settings> ON OFF w <Factory Settings> Set for each capacity. SW5 function switching 4 5 PUMY-P5YMA : Fix Fix the operation frequency PUMY-P5YMA : Enable Auto Change Over from Remote Controller Fixing the indoor units linear expansion valve opening Fix Fixing the outdoor unit electronic Fix expansion valve opening. Enable fixing at the desired frequency Enable Maintain outdoor fan at fixed speed and ignore outdoor temperature Active sensor abnormality 6 Normal Disable Normal Normal Disable Inactive OFF ON while compressor is not operating Before the power is turned on. OFF ON while compressor is not operating While unit stopping. 6 Ignore refrigerant filling abnormality Active Inactive 7 Switching the target discharge pressure (Pdm) Pdm switching Normal Can be set when off or during 8 Switching the target evaporation temperature (ETm) ETm switching Normal operation w For the system utilizing R-Converter units (PAC-SF9LB), SW trial operation function is not available. <Factory Settings> ON OFF

62 9-6. OUTDOOR UNIT INPUT/OUTPUT CONNECTOR State (CN5) Distant control board Lamp power L L Relay circuit X X Y Y External output adapter Outdoor unit control board 5 4 CN5 Preparations in the field Maximum cable length is 0m L : Error display lamp L : Compressor operation lamp X, Y : Relay (Coil standard of 0.9W or less for DC V) Comp ON/OFF (CNS) X External output adapter Outdoor unit control board CNS Preparations in the field Maximum cable length is 0m X : Comp ON/OFF ON : Comp OFF OFF : Normal Auto change over (CND) Distant control board Relay circuit Lamp power SW SW X Y X Y External output adapter Outdoor unit control board CND X, Y : Relay (DCmA) SW SW Preparations in the field PUMY-P5YMA PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5YMA ON Cooling Heating Maximum cable length is 0m OFF Heating Cooling Validity of SW Invalidity of SW For the system utilizing R-Converter units (PAC-SF9LB), the following systems are not available. Group operation system, centralized controller, group remote controller, etc. (See the installation manul of R-Converter units.) For the system utilizing R-Converter units (PAC-SF9LB), the following functions are not available. Test run (SW), auto change over, auto change over (external signal). (See the installation manul of R-Converter units.) 6

63 9-7. HOW TO CHECK THE PARTS PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5YMA Parts name Thermistor (TH) <Discharge temperature detection> Thermistor (TH) <Low pressure saturated temperature detection> Thermistor (TH5) <Pipe temperature detection / judging defrost> Thermistor (TH6) <Outdoor temperature detection> Thermistor (THHS A/B) <Radiator panel> PUMY-P5VMA,VMA Thermistor (THHS) <IPM radiator panel temperature thermistor detection> PUMY-P5YMA,YMA FAN MOTOR (MF,) Expansion valve (LEV(A), SLEV) White Orange Red Blue Protector Blue Check points Disconnect the connector then measure the resistance using a tester. (Surrounding temperature 0:~0:) TH TH TH5 TH6 THHS A/B THHS Normal 60k"~40k" 4.k"~9.6k" 9k"~05k" Abnormal Open or short Measure the resistance between the terminals using a tester. (Part wiring temperature 0C ) Motor lead wire Normal White Blue 07.5" ±0% Blue Red 8.0" ±0% Opening and closing temperature of protector. Open: 5i5 C (Fan motor OFF) Close: 86i5 C (Fan motor ON) Disconnect the connector then measure the resistance using a tester. (Part wiring temperature 0:) Normal Abnormal Open or short Abnormal White Red M Orange Brown Yellow White - Red Yellow - Brown Orange - Red Blue - Brown 50" ±0% Open or short 4-WAY COIL (S4) SOLENOID COIL (SV) Measure the resistance between the terminals using a tester. (Part wiring temperature 0C ) Normal Abnormal 40" Open or short Measure the resistance between the terminals using a tester. (Part wiring temperature 0C ) Normal Abnormal 970" Open or short <Thermistor feature chart> Low temperature thermistors Thermistor (TH) <Low pressure saturated temperature detection> Thermistor (TH5) <Pipe temperature detection / judging defrost> Thermistor (TH6) <Outdoor temperature detection> Thermistor R0 = 5k' ±% B constant = 480K ± % Rt =5exp{480( 7+t 7 )} 0: 5k' 0: 9.6k' 0: 6.k' 5: 5.4k' 0: 4.k' 40:.0k' Resistance (K") Temperature (:) 6 To be continued on the next page.

64 From the preceding page. PUMY-P5VMA PUMY-P5VMA Medium temperature thermistor Thermistor (THHS A/B) <Radiator panel> Thermistor R50 = 7k' ±% B constant = 450K ± % Rt =7exp{450( 7+t )} 0: 80k' 5: 50k' 50: 7k' 70: 8k' 90: 4k' Resistance (K") Temperature (:) PUMY-P5YMA, PUMY-P5YMA Medium temperature thermistor Thermistor (THHS) <IPM radiator panel temperature thermistor detection> Thermistor R50 = 7k' ±% B constant = 470K ± % Rt =7exp{470( 7+t )} 0: 80k' 5: 50k' 50: 7k' 70: 8k' 90: 4k' Resistance (K") Temperature (:) High temperature thermistor Thermistor (TH) <Discharge temperature detection> Thermistor R0 = 7.465k' ± % B constant = 4057K ± % Rt =7.465exp{4057( 7+t 9 )} 0: 50k' 0: 60k' 40: 04k' 50: 70k' 60: 48k' 70: 4k' 80: 4k' 90: 7.5k' 00:.0k' 0: 9.8k' Resistance (K") Temperature (:) 64

65 <HIGH PRESSURE SENSOR> Vout (V) SENSOR Vout WHT BLU BLK MULTI CONTROLLER BOARD 5V DC MRO COMPUTER 0.5 6HS GND PRESSURE (MPa) - : 5V (DC) - : Vout (DC) Expansion valve (LEV(A), SLEV: Outdoor unit) Notes on expansion valve action LEV(A), SLEV to stepping motor ON/OFF after outdoor controller board has received pulse signal. The valve position can be changed according to the pulse signal number ratio. <connection between the LEV(A), SLEV and the outdoor controller board> LEV(A), SLEV Relay connector (Only LEV(A)) BRN Controller board 6 DCV M Blue Brown Yellow 5 White Red Orange 4 6 {4 { { { RED BLU ORN YLW WHT 5 4 Drive circuit {4 { { { Connector (CN60) (LEV(A), SLEV) Note: Because the numbers of the relay connector and the connector on the controller board side are different, wiring work must rely on the colors of the wires. To be continued on the next page. 65

66 From the preceding page. Troubleshooting <Output pulse signal and valve action> Output Output(phase) 4 { ON OFF OFF ON { ON ON OFF OFF { OFF ON ON OFF {4 OFF OFF ON ON LEV(A), SLEV action Open D C Valve closing: 4 Valve opening:4 4 The address of the pulse output is shifted using the procedures mentioned earlier. w. All output phase will turn OFF when the LEV(A), SLEV stops operating.. When the output phase is terminated or when the phase shift is not according to frequency, the motor rotation will become irregular, causing the motor to vibrate or lockup. Valve position (volume) Close A E B Close Open Valve fully open at,000 pulses Number of pulses w When the power supply is on, the closing signal of,00 pulse will be transmitted to decide the position of the valve. The valve position can be determined when point A is reached. The LEV(LEV(A), SLEV) will not vibrate or make noise when the valve is operating smoothly. However, when the number of pulses change from E to A,or if the valve lockup, there may be more noise than under normal circumstances. The noise can be heard by resting your ear on the handle of a screwdriver that is pressed against the top of the LEV(LEV(A), SLEV) valve. Completely sealed (00 pulses) Problem Check point Corrective measure Remove the connector from the controller board and connect diagnostic LEDs. Replace the indoor unit controller board or Replace the outdoor multi controller board. Malfunction in microprocessor operating circuit Locked expansion valve k" LED When power is turned on, pulse signals will output for 0 seconds. There must be some defects in the operation circuit if the LED does not light while the signals are output or keeps lighting even after the signals stop. If the linear expansion valve (indoor unit) or electronic expansion valve (outdoor unit) becomes locked and the motor is still operating, the motor will emit a clicking noise and will not function. This clicking noise indicates an abnormality Replace the linear expansion valve or electronic expansion valve Short circuit or broken circuit in expansion valve motor coil Use an all-purpose electrical meter to measure the resistance between the different coils (white-red, yellow-brown, orange-red, blue-brown). Normal resistance is within a range of 50'±0%. Replace the linear expansion valve or electronic expansion valve Valve does no close completely In order to check the linear expansion valve, operate one indoor unit in the fan mode and another in the cooling mode. Then, use the outdoor multi controller board to operate the monitor and check the pipe temperature of the indoor unit (liquid pipe temperature). The linear expansion valve should be fully closed when the fan is operating. The temperature measured by the temperature sensor will drop if there is any leakage. If the measured temperature is significantly lower Temperature sensor <liquid pipe> Linear expansion valve than that on the remote controller, this indicates that the valve is not closed. It is not necessary to replace the linear expansion valve if the leak of refrigerant is small and does not cause a malfunction. Replace the linear expansion valve if there is a major leak of refrigerant. Incorrect connection or connection failure Check improperly connected connector terminals and the wire colors. Remove the connector on the controller board side and check electrical conductance Continuity check of wrong part. 66

67 9-8. TEST POINT DIAGRAM Outdoor multi controller board PUMY-P5YMA PUMY-P5YMA CN Connect to the outdoor power supply board (CN) :Inner thermostat abnormality signal :IPM abnormality signal :Shortage voltage abnormality signal 4:Bus-bar voltage detected signal 5:Power supply synchronous signal CN Connect to the outdoor power supply board (CN) :5C relay output signal :4-way valve output signal :Bypass valve output signal 4:OPEN 5:OPEN 6:Fan draive signal CN4 <Inverter sigunal> Connect to the outdoor power supply board (CN) AC,CT Detection of cureent SLEV Expansion valve TH Thermistor detection of low pressure saturated temperature TH6 Thermistor detection of outdoor temperature 5V DC V + CNCT Detection of paimary current (Cnnect to the NF (CNCT)) Only for 7VM/VM/ VM THHS Thermistor detection of IPM radiator panel temperature CN5 Commpressor drive signal output + V DC.5 5.6V TH5 Thermistor detection of pipe temperature 0V DC 7. 0V + CN Connect to the outdoor power supply board (CN) control power supply -:V DC -:5V DC 4:OPEN 5:OPEN 6-7:8V DC CN4 For storing jumper connector CN40 Centralized control power supply CND Auto change over signal CNS CNS Connect to the Connect to the terminal block TB7 terminal block TB (For centralized control) (Indoor/outdoor unit connecting wire) 6HS High pressure sensor TH Thermistor detection of discharge temperature CNS Demand signal 67

68 9-8-. Outdoor power supply board PUMY-P5YMA PUMY-P5YMA U, V, W Connect to the compressor (MC) Voltage among phases: 5V-400V AC P Connect to CB(+) P Connect to CB (+) N Connect to 5C CNR Connect to the outdoor resistor board (CNR) CN4 <Inverter sigunal> Connect to the outdoor multi controller board (CN) N Connect to CB ( ) 49C Thermal switch CN Connect to the outdoor multi circuit board (CN) :49C fault :IPM fault :Voltage shortage fault 4:Voltage sigunal 5:Fan sigunal MF, MF Connect to fan motor SV Solenoid valve (coil) S4 4-way valve (coil) 68 5C 5C Relay CN Connect to the outdoor multi controller board (CN) :5C Relay :S4 :SV 4:OPEN 5:OPEN 6:Fan motorl CN Connect to the outdoor multi controller board (CN) control power supply -:V DC -:5V DC 4:OPEN 5:OPEN 6-7:0V DC

69 9-8-. Outdoor resistor board PUMY-P5YMA PUMY-P5YMA CNR Connect to the outdoor power supply board (CNR) CNA 0-40V AC Connect to the noise filter (CNA) 69

70 Outdoor multi circuit board PUMY-P5VMA PUMY-P5VMA CNDC 00-80V DC Connect to the outdoor power circuit board (CNDC) } + MF, MF Connect to fan motor CN Signal wires Connect to the outdoor power circuit board (CN) 5C 5C Relay S4 Four-way valve SV Bypass valve CN5 Commpressor drive signal output TH Thermistor detection of low pressure saturated temperature TH5 Thermistor detection of pipe temperature TH6 Thermistor detection of outdoor temperature CNAC Power supply from outdoor noise filter circuit board (CNAC) 0-40V AC CN4 Transmission to the outdoor power circuit board (CN4) SWU, SWU Unit address selection SW4 Model selection SW Display selection SW5 Function selection SW Test selection TH Thermistor detection of discharge temperature SW Function selection SW6 Function selection 6HS High pressure sensor CNS Connect to the terminal block TB7 (For centralized control) LEV-A Expansion valve 49C/6C Thermal switch CNS Demand signal CND Auto change over signal CNS Connect to the terminal block TB (Indoor/outdoor unit connecting wire) 70

71 Outdoor power circuit board PUMY-P5VMA PUMY-P5VMA Brief Check of POWER MODULE W Usually, they are in a state of being short-circuited if they are broken. Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken.. Check of POWER MODULE.Check of DIODE circuit L - P, N - P, L - N, N - N.Check of IGBT circuit P - U, P - V, P - W, N - U, N - V, N - W Note:The marks, L, N, N, N, P, P, U, V and W shown in the diagram above are not actually printed on the board. CN5 Detection of primary current (Connect to the outdoor noise filter circuit board (CN5)) CN6 Temperature (Radiator panel (THHS-B)) CN Temperature (Radiator panel (THHS-A)) CN4 Connect to the outdoor controller circuit board (CN4) CNAF Connect to ACTM CN Connect to the outdoor multi circuti board (CN) -5: Power circuit board Transmitting signal to the controller board (0-5V DC) -5: Zero cross signal (0-5V DC) -4: 8V DC [ 5 :,, 6, 7 : + ] 6-5: 5V DC 7-5: 5V DC [ 4 : : + ] W V TAB-U, TAB-V, TAB-W Connect to the compressor (MC) Voltage among phases: 5V-80V AC U N P N N SC-R, SC-S Connect to the outdoor noise filter circuit board (LO, NO) 0V-40V AC P L SC-P, SC-N Connect to ACTM and the smoothing capacitor SC-P Connect to 5C SC-N Connect to ACTM ( ) POWER MODULE CNDC + } 00V-80V DC Connect to the outdoor multi circuit board (CNDC) 7

72 Outdoor noise filter circuit board PUMY-P5VMA PUMY-P5VMA LO, NO Voltage of 0-40V AC is output (Connect to the outdoor power circuit board (SC-R, SC-S)) CNAC, CNAC 0-40V AC (Connect to the outdoor multi circuit board (CNAC)) CN5 Primary current (Connect to the outdoor power circuit board (CN5)) EI Connect to the earth LI, NI Voltage of 0-40V AC is input (Connect to the terminal block(tb)) 7

73 9-9. OUTDOOR UNIT FUNCTIONS SW:setting 0...OFF...ON No. SW setting Display mode Relay output display Check display Indoor unit check status Protection input Protection input Protection input Abnormality delay display Abnormality delay display Abnormality delay display Abnormality delay history Abnormality delay history Abnormality delay history Abnormality code history (the latest) Abnormality code history Abnormality code history Abnormality code history 4 Abnormality code history 5 Abnormality code history 6 Abnormality code history 7 Abnormality code history 8 Abnormality code history 9 Abnormality code history 0 (the oldest) Cumulative time Cumulative time Outdoor unit operation display Indoor unit operation mode Indoor unit operation display Capacity code (No. indoor unit) Capacity code (No. indoor unit) Capacity code (No. indoor unit) Capacity code (No. 4 indoor unit) Capacity code (No. 5 indoor unit) Compressor operation 5C S4 0000~9999 (Alternating display of addresses and error code) Display on the LD (display data) SV 8 Lighting always No. unit check High-pressure abnormality TH abnormality Abnormality in the number of linked units High-pressure abnormality delay TH abnormality delay High-pressure abnormality delay TH abnormality delay No. unit check Discharge temperature abnormality TH abnormality Address double setting abnormality Discharge temperature abnormality delay TH abnormality delay Discharge temperature abnormality delay TH abnormality delay No. unit check Inner thermostat abnormality TH6 abnormality Indoor unit capacity Internal thermostat abnormality delay TH6 abnormality delay Internal thermostat abnormality delay TH6 abnormality delay No.4 unit check IPM abnormality TH5 abnormality Over capacity IPM abnormality delay TH5 abnormality delay IPM abnormality delay TH5 abnormality delay No.5 unit check Radiator panel abnormality Indoor unit address error Radiator panel overheating delay Radiator panel overheating delay No.6 unit check Vacuum operation abnormality THHS abnormality Outdoor unit address error THHS abnormality delay THHS abnormality delay No.7 unit check Power synchronization signal abnormality Restrict power IPM abnormality Refrigerant over charge abnormality Power synchronization signal abnormality delay Restrict power IPM abnormality delay Refrigerant over charge delay Power synchronization signal abnormality delay Restrict power IPM abnormality delay Refrigerant over charge abnormality delay No.8 unit check 6HS abnormality Insufficient voltage abnormality 6HS sensor abnormality delay Single-phase current delay(ct) Insufficient voltage abnormality delay 6HS abnormality delay Single-phase current delay(ct) Insufficient voltage abnormality delay Alternating display of addresses and abnormality code (including abnormality delay code) Delay code Abnormality delay Discharge temperature abnormality Discharge temperature sensor (TH) abnormality Intake outlet temperature sensor (TH5) abnormality Compressor internal thermostat abnormality Saturation temperature of suction pressure sensor (TH) abnormality Radiator panel thermistor (THHS) abnormality Outside air temperature sensor (TH6) abnormality Delay code Abnormality delay High-pressure abnormality Pressure sensor (6HS) abnormality Over charge refrigerant abnormality Insufficient refrigerant abnormality Power synchronization signal abnormality Frequency converter insufficient wiring voltage abnormality Radiator panel temperature abnormality IPM abnormality 0~9999(unit::-hour) 0~9999(unit::0-hour) Excitation Current No. unit mode No. unit operation Restart after minutes No. unit mode No. unit operation Compressor operation No. unit mode No. unit operation Abnormality(detection) No.4 unit mode No.4 unit operation No.5 unit mode No.5 unit operation No.6 unit mode No.6 unit operation No.7 unit mode No.7 unit operation No.8 unit mode No.8 unit operation 0~55 Notes ON: light on OFF: light off When abnormality occurs, check display. Check: light on Normal: light off Display input microprocessor protection (abnormality) Display all abnormalities remaining in abnormality delay Display all abnormalities remaining in abnormality delay history Display abnormalities up to present (including abnormality terminals) History record in is the latest; records become older in sequence; history record in 0 is the oldest. Display of cumulative compressor operating time Cooling : light on Heating: light flashing Stop fan: light off Thermo ON : light on Thermo OFF : light off Display of indoor unit capacity code The No. unit will start from the address with the lowest number 7

74 No SW setting Display mode operation mode operation mode operation mode 4 operation mode 5 operation mode OC operational mode External connection status Communication demand capacity Compressor operating current Input current of outdoor unit DC bus voltage Operational frequency Target frequency Outdoor fan control step number EER fan control step number (cooling) OC SLEV opening pulse LEV Opening pulse LEV Opening pulse LEV Opening pulse 4 LEV Opening pulse 5 LEV Opening pulse High-pressure sensor (Pd) TH(Td) TH(ET) TH6 TH5 THHS TH TH TH 4 TH 5 TH TH TH Display on the LD (display data) Cooling OFF Fan thermo ON Cooling thermo OFF Heating thermo ON Heating thermo OFF ON/OFF Heating/Cooling Abnormal/Normal DEFROST/NO Refrigerant pull back/no Excitation current/no -min.delay/no Demand junction 0~55 0.0~50.0 (A) 0.0~50.0 (A) 0~500 (V) 0~FF(6 progressive) 0~55 0~0 0~ ~ (short circuit/open: or 999.9) Notes Display of indoor unit operating mode Light on/light off Input: light off No input: light on Display of communication demand capacity PUMY-P5VMA PUMY-P5VMA PUMY-P5VMA Display of actual operating frequency Display of target frequency Display of number of outdoor fan control steps (target) Display of opening pulse of outdoor SLEV and indoor LEV Display of outdoor subcool (SC) data and detection data from high-pressure sensor and each thermistor 74

75 No. SW setting Display on the LD (display data) Display mode Notes TH Display of outdoor subcool TH ~ (short circuit/open: or 999.9) (SC) data and detection data TH from high-pressure sensor and TH each thermistor TH TH TH TH Outdoor SC (cooling) Target subcool step 0~4 Display of target subcool step data SC/SH Display of indoor SC/SH data SC/SH ~ (short circuit/open: or 999.9) SC/SH during heating: subcool (SC)/during cooling: superheat (SH) SC/SH SC/SH Discharge superheat -99.9~999.9 Display of discharge superheat data Target Pd display (heating) Pdm(0.0~.0) Display of all control target data Target ET display (cooling) ETm(-.0~8.0) Target outdoor SC (cooling) SCm(0.0~0.0) Target indoor SC/SH () SCm/SHm(0.0~4.0) Target indoor SC/SH () Target indoor SC/SH () 00 Target indoor SC/SH (4) Target indoor SC/SH (5) Actual frequency of abnormality delay 0~FF(6 progressive) Display of actual frequency at time of abnormality delay Fan step number at time of abnormality delay 0~0 Display of fan step number at time of abnormality delay OC SLEV opening pulse abnormality delay Display of opening pulse outdoor SLEV LEV opening pulse abnormality delay and indoor LEV at time of abnormality LEV opening pulse abnormality delay 0~000 delay LEV opening pulse abnormality delay LEV opening pulse abnormality delay LEV opening pulse abnormality delay 75

76 SW setting Display on the LD (display data) No. Display mode Notes High-pressure sensor data at time of abnormality delay TH sensor data at time of abnormality delay TH sensor data at time of abnormality delay TH5 sensor data at time of abnormality delay THHS sensor data at time of abnormality delay OC SC (cooling) at time of abnormality delay SC/SH at time of abnormality delay SC/SH at time of abnormality delay SC/SH at time of abnormality delay 4 SC/SH at time of abnormality delay 5 SC/SH at time of abnormality delay Actual frequency at time of abnormality Fan step number at time of abnormality OC SLEV opening pulse at time of abnormality LEV opening pulse at time of abnormality LEV opening pulse at time of abnormality LEV opening pulse at time of abnormality 4 LEV opening pulse at time of abnormality 5 LEV opening pulse at time of abnormality High-pressure sensor data at abnormality TH sensor data at time of abnormality TH sensor data at time of abnormality TH 5 sensor data at time of abnormality THHS sensor data at time of abnormality OC SC (Cooling) at time of abnormality SC/SH at time of abnormality SC/SH at time of abnormality SC/SH at time of abnormality 4 SC/SH at time of abnormality 5 SC/SH at time of abnormality ~ (short circuit/open: or 999.9) 0~FF(6progressive) 0~0 0~ ~ (short circuit/open: or 999.9) Display of data from high-pressure sensor, all thermistors, and SC/SH at time of abnormality delay Display of actual frequency at time of abnormality Display of fan step number at time of abnormality Display of opening pulse of outdoor SLEV and indoor LEV at time of abnormality Display of data from high-pressure sensor and all thermistors at time of abnormality Display of data from SC/SH and all thermistors at time of abnormality 76

77 No. SW setting Display on the LD (display data) Display mode Notes Capacity code Display of indoor unit capacity mode Capacity code 0~ Capacity code operation mode Cooling Cooling Heating Heating Display of indoor unit operating mode operation mode OFF Fan thermo thermo thermo thermo operation mode ON OFF ON OFF LEV opening pulse Display of opening pulse of outdoor LEV opening pulse 0~000 SLEV and indoor LEV LEV opening pulse TH 00 7 TH 00 8 TH 0 6 TH TH ~ (short circuit/open: or 999.9) TH TH TH TH SC/SH ~ (short circuit/open: or 999.9) Display of indoor SC/SH data SC/SH 00 8 SC/SH during heating:subcool (SC)/during cooling:superheat (SH) target SC/SH Display of all control target data target SC/SH SCm/SHm (0.0~4.0) target SC/SH LEV opening pulse at abnormality delay Display of opening pulse of indoor LEV LEV opening pulse at abnormality delay 0~000 at time of abnormality LEV opening pulse at abnormality delay SC/SH at abnormality delay SC/SH at abnormality delay ~ (short circuit/open: or 999.9) SC/SH at abnormality delay LEV opening pulse at time of abnormality Display of opening pulse of indoor LEV LEV opening pulse at time of abnormality 0~000 at time of abnormality LEV opening pulse at time of abnormality SC/SH at abnormality SC/SH at abnormality ~ (short circuit/open: or 999.9) SC/SH at abnormality 77

78 0 ELECTRAL WIRING This chapter provides an introduction to electrical wiring for the MULTI-S series, together with notes concerning power wiring, wiring for control (transmission wires and remote controller wires), and the frequency converter. 0-. OVERVIEW OF POWER WIRING () Please refer to your electric power company about the indoor wiring specifications for the power wire diameter and capacity of protective devices (switches and leakage of breakers). () Taking into consideration voltage drops caused by the length of the wires when operating devices installed downstream, determine the specifications of wires able to handle the maximum current or voltage. In addition, protective devices must be able to protect against current leakage or excessive current. () It is generally necessary to include leakage breakers when installing wiring for the CITY MULTI-S series. Protective switches (excessive current protection) along main or branch lines should typically consist of fuse-less breakers (ELB). (4) Please perform grounding. (5) It is suggested that you consult with your electric power company concerning restrictions on electrical specifications. 0-. WIRE DIAMETER AND MAIN POWER SWITCH CAPACITY 0--. Wiring diagram for main power supply PUMY-P5VMA PUMY-P5VMA Power supply single phase V, 50Hz Circuit breaker Outdoor unit Grounded PUMY-P5YMA PUMY-P5YMA Power supply (phase V, 50Hz) Power supply single phase 50Hz V Circuit breaker N Circuit breaker Outdoor unit Grounded Junction box Indoor unit Grounded 0--. Power supply wire diameter and capacity Minimum wire cross section area(mm ) Breaker Model Main line Branch line Grounded Interrupting current Performance characteristic Outdoor unit PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5YMA 5.5(6).5 5.5(6).5 A 5A A,0mA for 0. sec. or less 5A,0mA for 0. sec. or less Minimum wire cross section area(mm) Breaker Model Main line Branch line Grounded Interrupting current Performance characteristic Indoor unit All Models [.6 [.6 5A 5A, 0mA for 0. sec. or less 78

79 0-. DESIGN FOR CONTROL WIRING Please note that the types and numbers of control wires needed by the CITY MULTI-S series will depend on the remote controllers and whether they are linked with the system Selection number of control wires Transmission wires Use Remote controller indoor unit Wires connecting indoor units Wires connecting indoor units with outdoor unit Wires connecting outdoor units M-NET remote controller Remote controller used in system control operations. Group operation involving different refrigerant systems. Linked operation with upper control system. wires (non-polar) 0--. Control signal wires Transmission wires Types of transmission cables : Shielding wire CVVS or CPEVS. Cable diameter : More than.5e Maximum wiring length : Within 00 m 0--. Remote controller wiring Kind of remote control cable Cable diameter Remarks -core cable (unshielded) 0. to.5e When 0m is exceeded, use cable with the same specifications as 0--. Transmission line wiring Permissible length of control wiring Maximum extension length of wiring (L+L+L+L4)...less than 500m Maximum wire length (L+L+L4 or L+L or L+L+L4)...less than 00m Remote controller wire (R)...network controller wire is less than 0m Outdoor unit (Note ) Grounded Indoor unit Note : Please make sure that the transmission wire is grounded at the outdoor unit ground terminal. Note : If the remote controller wire is greater than 0m, the excess portion should use shielded wire at least.5mm in size. Please make sure that the total length of the farthest wire is less than 00m. L L L R.5mm shielded wire L4 R Remote controller (Note ) 79

80 0-4. SYSTEM SWITCH SETTING In order to identify the destinations of signals to the outdoor units, indoor units, and remote controller of the MULTI-S series, each microprocessor must be assigned an identification number (address). The addresses of outdoor units, indoor units, and remote controller must be set using their settings switches. Please consult the installation manual that comes with each unit for detailed information on setting procedures EXAMPLE EXTERNAL WIRING DIAGRAM FOR A BAS SYSTEM Example using a M-NET remote controller circuit breaker Power supply L,L,L phase 4 wire. 50Hz V N Outdoor unit Grounded Power supply 5A circuit breaker Single phase. 50Hz V [.6mm.5mm Junction box [.6mm Indoor unit 0.5~0.75mm Group operation Remote controller wire 0-6. METHOD FOR OBTAINING ELECTRAL CHARACTERISTS WHEN A CAPACITY AGREEMENT IS TO BE SIGNED WITH AN ELECTR POWER COMPANY The electrical characteristics of connected indoor unit system for air conditioning systems, including the MULTI-S series, will depend on the arrangement of the indoor and outdoor units. First read the data on the selected indoor and outdoor units and then use the following formulas to calculate the electrical characteristics before applying for a capacity agreement with the local electric power company Obtaining the electrical characteristics of a MULTI-S series system ()Procedure for obtaining total power consumption Total power consumption of each indoor unit power consumption of outdoor unit Total power consumption of system Page numbers in this technical manual See the technical manual of each indoor unit Standard capacity table page -4 See the technical manual of each indoor unit Power consumption + <kw> Please note that the power consumption of the outdoor unit will vary depends on the total capacity of the selected indoor units. ()Method of obtaining total current Total current through each indoor unit current through outdoor unit Total current through system Page numbers in this technical manual See the technical manual of each indoor unit Standard capacity table page -4 See the technical manual of each indoor unit Subtotal + <A> Please note that the current through the outdoor unit will vary depending on the total capacity of the selected indoor units. () Method of obtaining system power factor Use the following formula and the total power and current obtained in parts and on the previous page to calculate the system power factor. System power factor = (Total system power consumption) (Total system current x voltage) o 00% Applying to an electric power company for power and total current Calculations should be performed separately for heating and cooling employing the same methods; use the largest resulting value in your application to the electric power company. 80

81 REFRIGERANT PIPING TASKS -. REFRIGERANT PIPING SYSTEM A Line-Branch Method Connection Examples (Connecting to Four Indoor Units) A L R H B C h B a C b c C C d C 4 A B C Outdoor Unit First Branch Indoor unit Total Piping Length Permissible Farthest Piping Length (L) Length Farthest Piping Length After First Branch (R) Permissible High/ High/Low Difference in Indoor/Outdoor Section (H) Low Difference High/Low Difference in Indoor/Indoor Section (h) Selecting the Refrigerant Branch Kit Select Each Section of Refrigerant Pipng () Section From Oudoor Unit to First Branch (A) () Sections From Branch to Indoor Unit (a,b,c,d) () Section From Branch to Branch (B,C) Each Section of Piping Select the size from the table to the right. Additional refrigerant charge Refrigerant of kg equivalent to 50-m total extended piping length is already included when the outdoor unit is shipped. Thus, if the total extended piping length is 50m or less, there is no need to charge with additional refrigerant. If the total extended piping length exceeds 50m, calculate the required additional refrigerant charge using the procedure shown on the right. If the calculated additional refrigerant charge is a negative amount, do not charge with any refrigerant. A+B+C+a+b+c+d is 00 meters or less A+B+C+d is 70 meters or less B+C+d is 0meters or less 0 meters or less (If the outdoor unit is lower, 0 meters or less) meters or less Use an optional branch piping kit (CMY-Y6-C-E). () Refrigerant Piping Diameter In Section From Outdoor Unit to First Branch (Outdoor Unit Piping Diameter) Model PUMY-P5 Piping Diameter (mm) Liquid Line {9.5 Gas Line {9.05 () Refrigerant Piping Diameter In Section From Branch to Branch Downstream Unit Model Total 80 or less 80 or more <Additional Charge> Additional refrigerant charge (kg) = Liquid pipe size Total length of { (m) 0.06 (kg/m) Liquid Line (mm) {9.5 {9.5 () Refrigerant Piping Diameter In Section From Branch to Indoor Unit (Indoor Unit Piping Diameter) Model number 40 or lower 50 to 80 00, 5 Liquid pipe size Total length of { (m) 0.04 (kg/m) Gas Line (mm) {5.88 {9.05 Piping Diameter (mm) Liquid Line {6.5 Gas Line {.7 Liquid Line {9.5 Gas Line {5.88 Liquid Line {9.5 Gas Line {9.05 <Example> Indoor : 5 A : {9.5 0m a : {6.5 5m : 50 B : {9.5 0m b : {9.5 0m At the conditions : 5 C : {9.5 0m c : {6.5 0m below: 4 : 50 d : {9.5 0m The total length of each liquid line is as follows {9.5 : A + B + C + b + d = = 50m {6.5 : a + c = = 5m Therefore, <Calculation example> Additional refrigerant charge = = 0.4kg (rounded up) + Refrigerant amount for outdoor unit 5:.0kg 8

82 A A Header-Branch Method Connection Examples (Connecting to Four Indoor Units) B L R H C C C C 4 A Outdoor Unit B First Branch C Indoor unit Total Piping Length A+a+b+c+d is 00 meters or less Permissible Farthest Piping Length (L) A+d is 70 meters or less Length Farthest Piping Length After First Branch (R) d is 0 meters or less Permissible High/ High/Low Difference in Indoor/Outdoor Section (H) 0 meters or less (If the outdoor unit is lower, 0 meters or less) Low Difference High/Low Difference in Indoor/Indoor Section (h) meters or less Selecting the Refrigerant Branch Kit Please select branching kit, which is sold separately, from the table below. (The kit comprises sets for use with liquid pipes and for use with gas pipes.) The CMY-Y68- cannot be connected with 00,5 type indoor units. h a b Branch header (4 branches) CMY-Y64-C c Branch header (8 branches) CMY-Y68 d Select Each Section of Refrigerant Piping () Section From Outdoor Unit to First Branch (A) () Sections From Branch to Indoor Unit (a,b,c,d) Each Section of Piping Select the size from the table to the right. Additional refrigerant charge Refrigerant of kg equivalent to 50-m total extended piping length is already included when the outdoor unit is shipped. Thus, if the total extended piping length is 50m or less, there is no need to charge with additional refrigerant. If the total extended piping length exceeds 50m, calculate the required additional refrigerant charge using the procedure shown on the right. If the calculated additional refrigerant charge is a negative amount, do not charge with any refrigerant. () Refrigerant Piping Diameter In Section From Outdoor Unit to First Branch (Outdoor Unit Piping Diameter) Model PUMY-P5 <Additional Charge> Additional refrigerant charge (kg) Piping Diameter (mm) Liquid Line {9.5 Gas Line {9.05 = Liquid pipe size Total length of { (m) 0.06 (kg/m) () Refrigerant Piping Diameter In Section From Branch to Indoor Unit (Indoor Unit Piping Diameter) Model number 40 or lower 50 to 80 00,5 Liquid pipe size Total length of { (m) 0.04 (kg/m) Piping Diameter (mm) Liquid Line {6.5 Gas Line {.7 Liquid Line {9.5 Gas Line {5.88 Liquid Line {9.5 Gas Line {9.05 <Example> Indoor : 50 A : {9.5 0m a : {9.5 5m : 40 b : {6.5 0m At the conditions : 5 c : {6.5 0m below: 4 : 0 d : {6.5 0m The total length of each liquid line is as follows {9.5 : A + a = = 45m {6.5 : b + c + d = = 40m Therefore, <Calculation example> Additional refrigerant charge = = 0.7kg (rounded up) + Refrigerant amount for outdoor unit 5:.0kg 8

83 A Note: The total of downstream unit models in the table is the total of models as seen from point A in the figure above. Method of Combined Branching of Lines and Headers Connection Examples (Connecting to Five Indoor Units) A B Note: Pipe re-branching after the header branching is not possible. H B C a C D E c d e 4 5 D D D L R b D A G h F A Outdoor unit B First branching (branching joint) C Branching joint D Indoor unit E Branching header F To downstream unit G Blind caps Total Piping Length A+B+C+a+b+c+d+e is 00 meters or less Permissible Farthest Piping Length (L) A+B+b is 70 meters or less Length Farthest Piping Length After First Branch (R) B+b is 0 meters or less Permissible High/ High/Low Difference in Indoor/Outdoor Section (H) 0 meters or less (If the outdoor unit is lower, 0 meters or less) Low Difference High/Low Difference in Indoor/Indoor Section (h) meters or less Selecting the Refrigerant Branch Kit Please select branching kit, which is sold separately, from the table below. (The kit comprises sets for use with liquid pipes and for use with gas pipes.) Select Each Section of Refrigerant Piping () Section From Outdoor Unit to First Branch (A) () Sections From Branch to Indoor Unit (a,b,c,d,e) () Section From Branch to Branch (B,C) Each Section of Piping Select the size from the table to the right. () Refrigerant Piping Diameter In Section From Outdoor Unit to First Branch (Outdoor Unit Piping Diameter) Model PUMY-P5 Branch Joint CMY-Y6-C-E Piping Diameter (mm) Liquid Line {9.5 Gas Line {9.05 () Refrigerant Piping Diameter In Section From Branch to Branch Downstream Unit Model Total 80 or less 80 or more Branch Header (4 branches) Branch Header (8 branches) CMY-Y64-C CMY-Y68 Liquid Line (mm) {9.5 {9.5 () Refrigerant Piping Diameter In Section From Branch to Indoor Unit (Indoor Unit Piping Diameter) Model number 40 or lower 50 to 80 00,5 Gas Line (mm) {5.88 {9.05 Piping Diameter (mm) Liquid Line {6.5 Gas Line {.7 Liquid Line {9.5 Gas Line {5.88 Liquid Line {9.5 Gas Line {9.05 Additional refrigerant charge Refrigerant of kg equivalent to 50-m total extended piping length is already included when the outdoor unit is shipped. Thus, if the total extended piping length is 50m or less, there is no need to charge with additional refrigerant. If the total extended piping length exceeds 50m, calculate the required additional refrigerant charge using theprocedure shown on the right. If the calculated additional refrigerant charge is a negative amount, do not charge with any refrigerant. <Additional Charge> Additional refrigerant charge (kg) = Liquid pipe size Total length of { (m) 0.06 (kg/m) Liquid pipe size Total length of { (m) 0.04 (kg/m) <Example> Indoor : 50 A : {9.5 0m a : {9.5 5m : 40 B : {9.5 0m b : {6.5 0m : C : {9.5 0m c : {6.5 5m At the conditions below: 4 : 0 d : {6.5 5m 5 : 0 e : {6.5 5m The total length of each liquid line is as follows {9.5 : A + B + C + a = = 45m {6.5 : b + c + d + e = = 5m Therefore, <Calculation example> Additional refrigerant charge = = 0.kg (rounded up) + Refrigerant amount for outdoor unit 5:.0kg 8

84 A L Multi-distribution piping on outdoor unit Connection Examples (Connecting up to Five Indoor Units) B a b c d e H C C h C C 4 *If multi-distribution piping on outdoor unit is done, a maximum of 5 indoor units can be connected. Cannot redistribute the piping. C 5 A B C Outdoor Unit First Branch Indoor unit Permissible Length Permissible High/Low Difference Total Piping Length Farthest Piping Length High/Low Difference in Indoor/Outdoor Section High/Low Difference in Indoor/Indoor Section Selecting the Refrigerant Branch Kit a+b+c+d+e is 00 meters or less (L) e is 0 meters or less (H) 0 meters or less (0 meters or less if the outdoor unit is below.) (h) meters or less Use multi-distribution piping on outdoor unit kit CMY-S65 ( 5 branches). *Cannot be connected with 00,5 type indoor units. Select Each Section of Refrigerant Piping Section the piping size for each section from the branch to the indoor unit (a,b,c,d,e) using the chart on the right. Refrigerant Piping Diameter In Section From Branch to Indoor Unit (Indoor Unit Piping Diameter) Model number 40 or lower 50 to 80 Piping Diameter (mm) Liquid Line {6.5 Gas Line {.7 Liquid Line {9.5 Gas Line {5.88 Additional refrigerant charge Refrigerant of kg equivalent to 50-m total extended piping length is already included when the outdoor unit is shipped. Thus, if the total extended piping length is 50m or less, there is no need to charge with additional refrigerant. If the total extended piping length exceeds 50m, calculate the required additional refrigerant charge using theprocedure shown on the right. If the calculated additional refrigerant charge is a negative amount, do not charge with any refrigerant. <Additional Charge> Additional refrigerant charge (kg) = Liquid pipe size Total length of { (m) 0.06 (kg/m) Liquid pipe size Total length of { (m) 0.04 (kg/m) <Example> Indoor : 0 a : {6.5 0m : 0 b : {6.5 0m : 0 c : {6.5 0m 4 : 50 d : {9.5 0m 5 : 50 e : {9.5 0m The total length of each liquid line is as follows {9.5 : d + e = = 50m {6.5 : a + b + c = = 50m Therefore, Additional refrigerant charge = =.kg (rounded up) + Refrigerant amount for outdoor unit 5:.0kg 84

85 -. PRECAUTIONS AGAINST REFRIGERANT LEAKAGE --. Introduction R- refrigerant of this air conditioner is non-toxic and nonflammable but leaking of large amount from an indoor unit into the room where the unit is installed may be deleterious. To prevent possible injury, the rooms should be large enough to keep the R407C concentration specified by KHK : (a high pressure gas safety association) installation guidelines S000 as follows. () Calculate room volumes (in K) and find the room with the smallest volume The part with represents the room with the smallest volume. (a) Situation in which there are no partitions Outdoor unit Maximum concentration Maximum refrigerant concentration of R407C of a room is 0. kg/k accordance with the installation guidelines. To facilitate calculation, the maximum concentration is expressed in units of O/K ( kg of R407C per K) Maximum concentration of R407C: 0.O/K Outdoor unit (KHK installation guidelines S000) Direction of refrigerant flow Indoor unit (b) There are partitions, but there are openings that allow the effective mixing of air. Outdoor unit Indoor unit All refrigerant of this system will leak out to this room if there is leakage at this indoor unit. --. Confirming procedure of R407C concentration Follow ) to 4) to confirm the R407C concentration and take appropriate treatment, if necessary. () Calculate total refrigerant amount by each refrigerant system based on one indoor unit. Total refrigerant amount is prechrged refrigerant amount of the indoor unit at ex-factory plus additional charged amount at field installation. Indoor unit Opening Wall Ventilation apparatus (situation in which there are no door openings or in which there are openings above and blow doors that occupy at least 0.5% of the floor area) (c) If the smallest room has mechanical ventilation apparatus that is linked to a household gas detection and alarm device, the calculations should be performed for the second smallest room. Outdoor unit Note: When single refrigeration system is consists of several independent refrigeration circuit, figure out the total refrigerant amount by each independent refrigerant circuit. The smallest room The second smallest room Indoor unit () Use the results of calculations ()and () to calculate the refrigerant concentration: Total refrigerant in the refrigerating unit (O) [ maximum concentration(o/k) The smallest room in which an indoor unit has been installed (K) Maximum concentration of R407C:0.O/K If the calculation results do not exceed the maximum concentration, perform the same calculations for the larger second and third room, etc., until it has been determined that nowhere will the maximum concentration be exceeded. 85

86 DISASSEMBLY Service Ref. : PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5YMA OPERATING PROCEDURE. Please pay attention to safety when assembling or disassembling heavy items.. The refrigerant system must be vacuum-pumped before performing piping maintenance. PHOTOS. Side and top panel disassembly procedures: () Remove the side panel screws ( pcs : 5o0 screws) so that the hanging portion on the right side can be slid downward. Remove the side panel. () Remove the top panel screws (5o0 screws : pcs in front, pcs in back) and take off the top panel. <If the rear screws on the top panel cannot be removed> Remove the front screws on the top panel ( pcs : 5o0 screws) and lift up the front part of the top panel. Photo Fan protection covers Front panel Fan protection cover fixing screws Top panel installation screws Top panel Side panel installation screws Side panel (for service). Propeller and fan motor disassembly procedures: () Remove the side panel (See photo ) () Remove the top panel (See photo ) () Remove the fan protection cover fixing screw ( pc : 5o5), and take off the fan guard by rotating it to the left. (4) [PUMY-P5VMA, PUMY-P5VMA] Remove the fan motor wires (MF) (MF) from the multi circuit board. Remove the capacitor wires. Photo PUMY-P5VMA PUMY-P5VMA Propeller Power circuit board Multi circuit board [PUMY-P5YMA, PUMY-P5YMA] Remove the fan motor wires (MF) (MF) from the power supply board. Remove the capacitor wires. (5) Loosen the fan motor wire clips ( pcs). (6) Remove the propeller. (7) Remove the fan motor screws ( pcs : 5o6 screws) and remove the fan motors. Fan motors Photo PUMY-P5YMA, PUMY-P5YMA Power supply board Electrical parts box Propeller Multi controller board Electrical parts box Fan motors 86

87 OPERATING PROCEDURE PHOTOS. Thermistor (TH6: outdoor air temperature sensor detection) disassembly procedures: () Remove the side panel (See photo ) () Remove the top panel (See photo ) () Remove the thermistor holder fixing screw ( pc : 4o0), and remove the thermistor holder. (4) Remove the Thermistor (outdoor air temperature detection). (5) Remove the TH6 wire from the multi-functional controller board in the electrical box and pull out of the electrical box. Photo 4 Thermistor (air temperature detection) Thermistor holder screw Thermistor holder Rear panel Heat exchanger 4. Electrical parts box disassembly procedures: [PUMY-P5VMA PUMY-P5VMA] () Remove the side panel (See photo ) () Remove the top panel (See photo ) () Disconnect the following wires from the multi controller board. Thermistor (Discharge temperature detection):th Thermistor (Low pressure saturated temperature detection):th Thermistor (Pipe temperature defection / Judging defrost):th5 Thermistor (Outdoor temperature detection): TH6 High-pressure sensor (Discharge pressure detection): 6HS Expansion valve: LEV(A) Fan motor: MF and MF Solenoid valve coil: SV 4-way valve coil: S4 (4) Remove the board plate. Pull wires out of the electrical parts box after disconnecting them. Photo 5 PUMY-P5VMA PUMY-P5VMA Power circuit board Board plate Electrical parts box Rear panel Multi circuit board Electric parts box screw (6) After removing the connector cover, remove the compressor wire and the inner thermostat terminal. (7) Remove the electrical box screw ( pc : 4 o 0). (8) Remove the valve bed screws from the right side of the valve bed ( pcs : 4 o 0). (9) Remove the electrical box after slightly loosening the rear panel. The electrical box is held by two claws on the left and one on the right. Connector cover Valve bed Valve bed screws 87

88 OPERATING PROCEDURE 5. Electrical parts box disassembly procedures: [PUMY-P5YMA PUMY-P5YMA] () Remove the side panel (See photo ) () Remove the top panel (See photo ) () Disconnect the following wires from the multi controller board. Thermistor (Discharge temperature detection):th Thermistor (Low pressure saturated temperature detection):th Thermistor (Pipe temperature defection judging defrost):th5 Thermistor (Outdoor temperature detection): TH6 High-pressure sensor (Discharge pressure detection): 6HS Expansion valve: SLEV (4) Remove the board plate. (5) Disconnect the following wires from the power supply board: Fan motor: MF and MF Solenoid valve: SV 4-way valve: S4 Pull wires out of the electrical box after disconnecting them. Photo 6 PUMY-P5YMA PUMY-P5YMA Power supply board PHOTOS Board plate Electrical parts box Rear panel Multi controller board Electric parts box screw (6) After removing the connector cover, remove the compressor wire and the inner thermostat terminal. (7) Remove the electrical box screw ( pc : 4 o 0). (8) Remove the valve bed screws from the right side of the valve bed ( pcs : 4 o 0). (9) Remove the electrical box after slightly loosening the rear panel. The electrical box is held by two claws on the left and one on the right. Connector cover Valve bed Valve bed screws 6. Solenoid valve coil and 4-way valve coil disassembly procedures: () Remove the side panel (See photo ). () Remove the top panel (See photo ). () Remove the electrical parts box (See photo 5 or 6). (4) Remove coil screws (Solenoid valve: pc M4x6; 4-way valve: pc M5x6), and remove the solenoid valve coil (SV) and 4-way valve coil (S4) wires from the power supply board. Photo 7 Solenoid valve coil 4-way valve 4-way valve coil 88

89 OPERATING PROCEDURE PHOTOS 7. Thermistor disassembly procedures: () Remove the side panel (See photo ) () Remove the top panel (See photo ) () Remove the electrical parts box (See photo 5 or 6) (4) Recover gas from the refrigerant circuit. (5) Remove the Thermistor (discharge temperature detection: TH), (Low pressure saturated temperature detection: TH), (Pipe temperature detection / judging defrost: TH5). To remove TH, cut the bands holding it and remove the piping cover. Photo 8 Thermistor (TH) Bands Oil separator Piping cover Thermistor (TH) Photo 9 Welding part of high pressure sensor Thermistor (TH5) 8. Compressor disassembly procedures: () Remove the side panel (See photo ) () Remove the top panel (See photo ) () Remove the screws ( pcs : 5o0, pc : 4o0) and the front panel. (4) Remove the electrical parts box (See photo 5 or 6). (5) Remove screws ( pcs : 4o0, 4 pcs : 5o6) and the valve bed (including the ball valve mounting portion). (6) Recover gas from the refrigerant circuit. (7) Remove the separator screw. ( pc : 4o0) (8) Remove the welded portions of the compressor discharge and intake pipes. (9) Remove the compressor leg cover on the separator side. (0)Remove the compressor leg mounting nuts ( pcs). (use an adjustable wrench) ()Move the separator to the left and remove the compressor. Compressor Photo 0 Separator Compressor 9. Accumulator disassembly procedures: () Remove the compressor (See photo 0). () Remove the welded portions of the accumulator. () Lift up the accumulator and pull it out from the rear. Separator installation screw Installation nuts Accumulator 89

90 OPERATING PROCEDURE 0. Four-way valve disassembly procedures: () Remove the side panel (See photo ). () Remove the top panel (See photo ). () Remove the electrical parts box (See photo 5 or 6). (4) Recover gas from the refrigerant circuit. (5) Remove the 4-way valve coil (See photo 7). (6) Remove the mounting screws from the gas side ball valve ( pcs : 5o6). (7) Remove the field piping from the outdoor unit (gas side). (8) Remove the welded portion. Upper and lower heat exchanger inlet (T connector). Accumulator inlet (T connector) 4-way valve inlet (9) Remove 4-way valve. Do not expose 4-way valve to above 0 C. Photo PHOTOS Pipe of heat exchanger inlet (T connector) Accumulator inlet (T connector) 4-way valve 4-way valve inlet Gas side ball valve. Solenoid valve disassembly procedures: () Remove the side panel (See photo ). () Remove the electrical parts box (See photo 5 or 6). () Recover gas from the refrigerant circuit. (4) Remove the solenoid valve coil (See photo 7). (5) Remove the welded portions of the solenoid valve. (take care excessive heating) Photo Oil separator Fixing screws Solenoid valve coil Welding parts. Expansion valve disassembly procedures: () Remove the side panel (See photo ). () Remove the electrical parts box (See photo 5 or 6). () Recover gas from the refrigerant circuit. (4) Remove welded portions of expansion valve. (take care excessive heating) To remove welded portion, cut the band holding it and remove the rubber tube. Photo Rubber tube Band Expansion valve Welding parts 90

91 OPERATING PROCEDURE. High pressure sensor (6HS)disassembly procedures: () Remove the side panel (See photo ). () Remove the high pressure sensor wire. () Recover gas from the refrigerant circuit. (4) Remove the welded portion of high pressure sensor. (5) Remove the mounting screw fastening the high pressure sensor mounting plate ( pc : 4o0). (6) Remove the high pressure sensor mounting screws ( pcs : 4o0). Photo 4 Separator fixing screw PHOTOS High pressure sensor High pressure sensor mount Welding part 4. Capillary tube disassembly procedures: () Remove the side panel (See photo ). () Remove the top panel (See photo ). () Remove the electrical parts box (See photo 5 or 6). (4) Recover gas from the refrigerant circuit. (5) Remove the field piping from the unit (liquid side) (6) Remove the welded portions of capillary tube. To remove welded portions, cut the band holding it and remove the rubber tube. Photo 5 Capillary tube 4 Capillary tube Capillary tube Capillary tube 9

92 PARTS LIST ELECTRAL PARTS PUMY-P5VMA PUMY-P5VMA W The illustration below is of PUMY-P5VMA No Part No. R T7W E9 5 T7W 50 9 T7W E08 R0 E65 0 T7W E04 46 T7W A 76 T7W A 76 T7W E0 59 TW7 E04 59 T7W E0 4 T7W E00 T7W E05 54 T7W E0 59 Part Name FAN MOTOR CAPACITOR MULTI CIRCUIT BOARD FUSE POWER CIRCUIT BOARD THERMISTOR (RADIATOR PANEL) NOISE FILTER CIRCUIT BOARD TERMINAL BLOCK TERMINAL BLOCK REACTOR REACTOR RESISTOR (RUSH CURRENT PROTECTION) ACTIVE FILTER MODULE SMOOTHING CAPACITOR MAGNET CONTACTOR Specification Q, ty/set Wiring Recommended Remarks Diagram PUMY-P (Drawing No.) Symbol Q, ty 5VMA5VMA.5µF 440VAC C, M.B. 6.A 50V F, F P.B. THHS A/B N.F. P(M, M, S) TB,7 P(L, N, ;) TB 4 DCL,,,4 DCL, RS ACTM,600µ / 400WV CE S-U 0V 5C Unit Price Amount 9

93 ELECTRAL PARTS PUMY-P5YMA PUMY-P5YMA 5 4 VARISTOR No Part No. R T7W E0 9 T7W 50 9 T7W E 5 T7W E8 5 T7W E00 59 T7W E00 T7W T7W E00 4 T7W A 76 T7W E0 76 T7W E0 46 T7W E0 54 T7W E00 49 T7W E00 9 R0 6A 0 Part Name Specification FAN MOTOR CAPACITOR.5µF 440VAC FUSE A 50V FUSE 6.A 50V MULTI CONTROLLER BOARD MULTI CONTROLLER BOARD REACTOR POWER SUPPLY BOARD MAGNET CONTACTOR S-U 0V RESISTOR BOARD TERMINAL BLOCK P(M,M,S) TERMINAL BLOCK 5P(L,L,L,N,;) NOISE FILTER CAPACITOR VARISTOR DIODE MODULE THERMISTOR (IPM RADIATOR PANEL) Q, ty/set Wiring Recommended PUMY-P5 Remarks Diagram (Drawing No.) Symbol Q, ty YMA YMA C, FUSE FUSE DCL 5C TB,7 TB NF C0 ZNR DM THHS Unit Price Amount 9

94 FUNCTIONAL PARTS PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5YMA

95 Part number that is circled is not shown in the figure. No Part No. R0 KL5 5 R0 0L 097 R0 5A 0 R0 E00 68 R0 E0 0 R0 J0 45 T T R0 E0 40 R0 E0 4 R0 8A 440 R0 4L 450 R0 8W 4 T7W E0 4 R0 E06 40 R0 KP 467 T7W E7 0 R0 E9 0 T7W E 45 R0 8A 45 R0 E0 45 R0 E0 48 T7W E00 4 R0 7A 490 R0 05A 40 R0 V9 40 T7W E6 0 R0 E 0 R0 E 408 T7W E9 76 T7W E8 76 R0 E Part Name Specification PROPELLER NUT M8 THERMISTOR (DISCHARGE TEMPERATURE DETECTION) HIGH PRESSURE SENSOR.0MPa THERMISTOR (PIPE TEMPERATURE DETECTION / JUDGING DEFROST) CAPILLARY TUBE [.5O[0.6O500mm COMPRESSOR EEV48FAM COMPRESSOR EEV48FAK BALL VALVE /8" BALL VALVE /4" ACCUMULATOR STRAINER CHARGE PLUG 4-WAY VALVE (COIL) 4-WAY VALVE MUFFLER THERMISTOR (LOW PRESSURE SATURATED TEMPERATURE DETECTION) THERMISTOR (LOW PRESSURE SATURATED TEMPERATURE DETECTION) CAPILLARY TUBE [.5O[0.6O500mm CAPILLARY TUBE [4.0O[.0O00mm CAPILLARY TUBE 4 [4.0O[.4O60mm SOLENOID VALVE (COIL) SOLENOID COIL OIL SEPARATOR EXPANSION VALVE EXPANSION VALVE THERMISTOR (OUTDOOR TEMPERATURE DETECTION) THERMISTOR (OUTDOOR TEMPERATURE DETECTION) HEAT EXCHANGER FAN MOTOR PA6V60-GD FAN MOTOR PA6V60-GC DRYER Q, ty/set PUMY-P5 VMA YMA YMA VMA Wiring Recommended Remarks Diagram (Drawing No.) Symbol Q, ty TH 6HS TH5 MC MC S4 TH TH SV LEV(A) SLEV TH6 TH6 MF MF Unit Price Amount 95

96 STRUCTURAL PARTS PUMY-P5VMA PUMY-P5VMA PUMY-P5YMA PUMY-P5YMA 4 SCREW No Part No. Part Name Specification R0 KN4 675 FAN GUARD R0 8A 668 FRONT PANEL R0 KL5 655 PANEL HANDLE R0 8A 686 BASE R0 E0 0 MOTOR SUPPORT SEPARATOR ASSY T7W E PANEL COVER R0 8A 68 REAR PANEL R0 8A 66 SERVE PANEL R0 KP 698 REAR GUARD MOTOR PLATE T7W E00 64 TOP PANEL R0 8A 64 TOP PANEL SCREW (5O0) R0 KP 66 SIDE PANEL LEFT Q, ty/set PUMY-P5 VMA YMA YMA VMA Remarks (Drawing No.) (BG00G6G7) (BG00C965G0) (DGF56H0) Wiring Recommended Diagram Symbol Q, ty Unit Price Amount 96