SPLIT-TYPE, HEAT PUMP AIR CDITIERS TECHNICAL & SERVICE MANUAL November 008 No. OC0 REVISED EDITI-A Series PFFY Indoor unit [Model names] PFFY-P0VKM-E PFFY-PVKM-E PFFY-PVKM-E PFFY-P0VKM-E Floor Standing R0A [Service Ref.] PFFY-P0VKM-E PFFY-P0VKM-ER PFFY-PVKM-E PFFY-PVKM-ER PFFY-PVKM-E PFFY-PVKM-ER PFFY-P0VKM-E PFFY-P0VKM-ER CTENTS R07C R Revision: PFFY-P0///0 VKM-ER are added in REVISED EDITI-A. Some descriptions have been modified. Please void OC0. INDOOR UNIT Indication of model name. TECHNICAL CHANES.... SAFETY PRECAUTI.... PART NAMES AND FUNCTIS.... SPECIFICATI... 8. NOISE CRITERIA CURVES... 0. AIR OUTLET SELECTI... 7. OUTLINES AND DIMENSIS... 8. WIRIN DIARAM... 9. REFRIERANT SYSTEM DIARAM... 0. TROUBLE SHOOTIN.... DISASSEMBLY PROCEDURE.... RoHS PARTS LIST... 8 NOTE: This service manual describes technical data of the indoor units. As for outdoor units refer to outdoor unit s service manual. RoHS compliant products have <> mark on the spec name plate.
TEHNICAL CHANES PFFY-P0VKM-E PFFY-PVKM-E PFFY-PVKM-E PFFY-P0VKM-E PFFY-P0VKM-ER PFFY-PVKM-ER PFFY-PVKM-ER PFFY-P0VKM-ER INDOOR CTROLLER BOARD (I.B.) has been changed. SAFETY PRECAUTI CAUTIS RELATED TO NEW REFRIERANT Cautions for units utilizing refrigerant R07C 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 seal 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 indoors during installation and 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 R07C. 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. R07C cylinder are available on the market has a syphon pipe. Leave the syphon pipe cylinder standing and recharge it. (By liquid refrigerant) Unit ravimeter () 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. [] Service tools Use the below service tools as exclusive tools for R07C refrigerant. No. Tool name Specifications auge manifold Only for R07C. Use the existing fitting SPECIFICATIS. (UNF7/) Use high-tension side pressure of.mpa or over. Charge hose Only for R07C. Use pressure performance of.0mpa or over. Electronic scale as leak detector Use the detector for Ra or R07C. Adapter for reverse flow check. Attach on vacuum pump. Refrigerant charge base. 7 Refrigerant cylinder. For R07C Top of cylinder (Brown) Cylinder with syphon 8 Refrigerant recovery equipment.
Cautions for units utilizing refrigerant R0A 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 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 indoors during installation and both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.) If dirt, dust or moisture enter into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor. Use ester oil, ether oil or alkylbenzene oil (small amount) as the refrigerant oil applied to flares and flange connections. If large amount of mineral oil enter, that can cause deterioration of refrigerant oil etc. Charge refrigerant from liquid phase of gas cylinder. If the refrigerant is charged from gas phase, composition change may occur in refrigerant and the efficiency will be lowered. Use a vacuum pump with a reverse flow check valve. Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc. Use the following tools specifically designed for use with R0A refrigerant. The following tools are necessary to use R0A refrigerant. Tools for R0A auge manifold Flare tool Charge hose Size adjustment gauge as leak detector Vacuum pump adaptor Torque wrench Electronic refrigerant charging scale Handle tools with care. If dirt, dust or moisture enter into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor. Do not use a charging cylinder. If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered. Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released. Do not use refrigerant other than R0A. If other refrigerant (R etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil etc.
[] Cautions for service () Perform service after collecting the refrigerant left in unit completely. () Do not release refrigerant in the air. () After completing service, charge the cycle with specified amount of refrigerant. () When performing service, install a filter drier simultaneously. Be sure to use a filter drier for new refrigerant. [] Additional refrigerant charge When charging directly from cylinder Check that cylinder for R0A on the market is syphon type. Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.) Unit ravimeter [] Service tools Use the below service tools as exclusive tools for R0A refrigerant. No. Tool name Specifications auge manifold Only for R0A Use the existing fitting specifications. (UNF/) Use high-tension side pressure of.mpa or over. Charge hose Only for R0A Use pressure performance of.09mpa or over. Electronic scale as leak detector Use the detector for Ra, R07C or R0A. Adaptor for reverse flow check Attach on vacuum pump. Refrigerant charge base 7 Refrigerant cylinder Only for R0A Top of cylinder (Pink) Cylinder with syphon 8 Refrigerant recovery equipment
PART NAMES AND FUNCTIS Indoor Unit Louver Air outlet Air inlet Vane Filter Damper Air outlet Louver Wired remote controller Once the controls are set, the same operation mode can be repeated by simply pressing the / button. Operation buttons Set Temperature buttons / button Down Up Fan Speed button Timer Menu button (Monitor/Set button) Mode button (Return button) Filter button (<Enter> button) TEMP. / Test Run button Set Time buttons Check button (Clear button) Back MENU / FILTER Ahead Timer On/Off button (Set Day button) BACK PAR-MAA MITOR/SET DAY CLOCK OPERATI CHECK TEST CLEAR Airflow Up/Down button Louver button ( Operation button) Opening the door. To preceding operation number. Ventilation button ( Operation button) To next operation number.
Display For purposes of this explanation, all parts of the display are shown as lit. During actual operation, only the relevant items will be lit. Identifies the current operation Shows the operating mode, etc. * Multilanguage display is supported. Day-of-Week Shows the current day of the week. Time/Timer Display Shows the current time, unless the simple or Auto Off timer is set. If the simple or Auto Off timer is set, shows the time remaining. Sensor indication Displayed when the remote controller sensor is used. Locked indicator Indicates that remote controller buttons have been locked. Clean The Filter indicator Comes on when it is time to clean the filter. Centrally Controlled indicator Indicates that operation of the remote controller has been prohibited by a master controller. Timer Is Off indicator Indicates that the timer is off. Temperature Setting Shows the target temperature. F C TIME SUN M TUE WED THU FRI SAT TIMER Hr AFTER AFTER ERROR CODE F C LYHr. Up/Down Air Direction indicator The indicator shows the direction of the outcoming airflow. One Hour Only indicator Displayed if the airflow is set to Low and downward during COOL or DRY mode. (Operation varies according to model.) The indicator goes off after one hour, at which time the airflow direction also changes. FUNCTI FILTER WEEKLY SIMPLE AUTO Room Temperature display Shows the room temperature. Louver display Indicates the action of the swing louver. Does not appear if the louver is stationary. (Power On indicator) Indicates that the power is on. Timer indicators The indicator comes on if the corresponding timer is set. Fan Speed indicator Shows the selected fan speed. Ventilation indicator Appears when the unit is running in Ventilation mode. Caution Only the Power on indicator lights when the unit is stopped and power supplied to the unit. If you press a button for a feature that is not installed at the indoor unit, the remote controller will display the Not Available message. If you are using the remote controller to drive multiple indoor units, this message will appear only if he feature is not present at every unit connected. When power is turned for the first time, it is normal that PLEASE WAIT is displayed on the room temperature indication (For max. minutes). Please wait until this PLEASE WAIT indication disappear then start the operation. For the PFFY-P VKM series, the airflow direction displayed on the remote controller is different from the actual airflow direction. Refer to the following table. Display (Horiz.) Swing Actual (Horiz.) Swing The airflow direction for the lower air outlet damper cannot be set. The airflow direction is automatically controlled by a computer. 7
SPECIFICATI -. Specification Item PFFY-P0VKM-E PFFY-P0VKM-ER PFFY-PVKM-E PFFY-PVKM-ER Power source -phase 0-0V 0Hz Cooling capacity kw..8.. Heating capacity kw...0.0 Power Cooling kw 0.0 0.0 0.0 0.08 consumption Heating kw 0.0 0.0 0.0 0.08 Current Cooling A 0.0 0.0 0.0 0. Heating A 0.0 0.0 0.0 0. Height mm 00 00 00 00 Dimension Width mm 700 700 700 700 Depth mm 00 00 00 00 Weight kg Heat exchanger Cross fin (Aluminum plate fin and copper tube) Type Line flow fan Fan Airflow rate * m /min.9-.8-7.-8.7.-7.0-8.0-9..-7.0-8.0-9. 8.0-9.0-9.-0.7 External static pressure Pa 0 Motor Type DC motor Output kw 0.0 Air filter PP honeycomb fabric (Catechin air filter) Refrigerant as (Flare) mm.7 pipe dimension Liquid (Flare) mm. Field drain pipe size mm I.D.(PVC pipe VP- connectable) Noise level * db(a) 7---7 8---8 8---8-8-- Note. Rating conditions (JIS B 8) Cooling : Indoor : D.B. 7 C W.B. 9.0 C outdoor : D.B. C Heating : Indoor : D.B. 0 C outdoor : D.B. 7 C W.B. C *. Air flow and the noise level are indicated as High-Medium-Medium-Low. PFFY-PVKM-E PFFY-PVKM-ER PFFY-P0VKM-E PFFY-P0VKM-ER 8
-. Electrical parts specifications Model Parts name Thermistor (Room temperature detection) Thermistor (Pipe temperature detection/liquid) Thermistor (Pipe temperature detection/as) Fuse (Indoor controller board) Fan motor (Upper) Fan motor (Lower) Vane motor Damper motor Linear expansion valve [coil] Power supply terminal block Transmission terminal block Symbol TH TH TH FUSE MF MF MV MV LEV TB TB PFFY-P0VKM-E PFFY-P0VKM-ER PFFY-PVKM-E PFFY-PVKM-ER Resistance 0 /k, 0 /9.k, 0 /.k, /.k, 0 /.k, 0 /.0k Resistance 0 /k, 0 /9.k, 0 /.k, /.k, 0 /.k, 0 /.0k Resistance 0 /k, 0 /9.k, 0 /.k, /.k, 0 /.k, 0 /.0k 0V.A OUTPUT 0W ARW0Z8P0MS OUTPUT 0W ARW0Y8P0MS MP0Z DCV MPEA DCV DCV Stepping motor drive Port dimension. (0~000 pulse) EFM-0YME (L, N, ) 0V 0A (M, M, S) 0V 0A PFFY-PVKM-E PFFY-PVKM-ER PFFY-P0VKM-E PFFY-P0VKM-ER 9
NOISE CRITERIA CURVES PFFY-P0VKM-E Test conditions, Cooling : Dry-bulb temperature 7 Heating : Dry-bulb temperature 0 90 OCTAVE BAND SOUND PRESSURE LEVEL, db re 0.000 MICRO BAR Test conditions, Cooling : Dry-bulb temperature 7 Heating : Dry-bulb temperature 0 90 OCTAVE BAND SOUND PRESSURE LEVEL, db re 0.000 MICRO BAR 80 70 0 0 0 0 0 0 80 70 0 0 0 0 0 0 APPROXIMATE THRESHOLD OF HEARIN FOR CTINUOUS NOISE PFFY-P0VKM-E 0 00 000 000 000 8000 APPROXIMATE THRESHOLD OF HEARIN FOR CTINUOUS NOISE FAN SPEED High FAN SPEED High PFFY-P0VKM-ER FUNCTI COOLIN HEATIN BAND CENTER FREQUENCIES, Hz FUNCTI COOLIN HEATIN SPL(dB(A)) 7 7 Wet-bulb temperature 9 Wet-bulb temperature PFFY-P0VKM-ER SPL(dB(A)) Wet-bulb temperature 9 Wet-bulb temperature 0 00 000 000 000 8000 BAND CENTER FREQUENCIES, Hz LINE LINE NC-70 NC-0 NC-0 NC-0 NC-0 NC-0 NC-70 NC-0 NC-0 NC-0 NC-0 NC-0 Test conditions, Cooling : Dry-bulb temperature 7 Heating : Dry-bulb temperature 0 90 OCTAVE BAND SOUND PRESSURE LEVEL, db re 0.000 MICRO BAR PFFY-PVKM-E PFFY-PVKM-E 80 70 0 0 0 0 0 0 APPROXIMATE THRESHOLD OF HEARIN FOR CTINUOUS NOISE FAN SPEED High FUNCTI COOLIN HEATIN SPL(dB(A)) 8 8 Wet-bulb temperature 9 Wet-bulb temperature 0 00 000 000 000 8000 BAND CENTER FREQUENCIES, Hz MICROPHE m INDOOR UNIT m PFFY-PVKM-ER PFFY-PVKM-ER WALL LINE NC-70 NC-0 NC-0 NC-0 NC-0 NC-0 0
8 7 8 7 F0789ABCDE AIR OUTLET SELECTI SW 7 8 90 SW 9 0 SW 9 0 CN SWC SWC CN8 SW With this function, air comes out simultaneously from the upper and lower air outlets so that the room can be cooled or heated effectively. This function is set using the switch SWC on the address board. (0ths DIIT) (s DIIT)./. (BRANCH No.) Fig. - SWC SWC How to set to blow out air from the upper and lower air outlets: Set the SWC to lower side (" "). (Initial setting) Air blows out automatically from the upper and lower air outlet as shown in the table below. How to set to blow out air from the upper air outlet only: Set the SWC to upper side (" "). Note: Be sure to operate with the main power turned off. Description of operation Operation COOL DRY HEAT FAN Air flow Upper and lower air flow Upper air flow Upper air flow only Upper and lower air flow Upper air flow Upper and lower air flow Conditions Room temperature and set temperature are different. Room temperature is close to set temperature or thermo-off. (Normal condition (in heating)) During defrosting operation, start of operation, thermo-off Be sure to keep the area around the damper of the lower air outlet free of any objects. Upper and lower air flow Upper air flow deg deg (Room temp. Set temp.) DIP SW- (on indoor controller board) : (Initial Setting) If the air conditioner has operated for hours with upper and lower air flow, it changes to 8deg for next 0minutes. After 0minutes it changes back to deg. DIP SW- (on indoor controller board) : Remains to be deg.
7 OUTLINES AND DIMENSIS PFFY-P0VKM-E PFFY-PVKM-E PFFY-PVKM-E PFFY-P0VKM-E PFFY-P0VKM-ER PFFY-PVKM-ER PFFY-PVKM-ER PFFY-P0VKM-ER Unit : mm INDOOR UNIT - Hole 7 7 9 0 0 0 0 7 7 7 Installation plate Indoor unit 9 700. 07. 0 More than 00mm Air out 00 More than 00mm More than 00mm 00 Air out Air in 8 9 as pipe.7(flared)/ Liquid pipe.(flared)/ 08 7 drain 0 8 0 9 0 0 80
8 WIRIN DIARAM PFFY-P0VKM-E PFFY-PVKM-E PFFY-PVKM-E PFFY-P0VKM-E [LEEND] SYMBOL I. B NAME INDOOR CTROLLER BOARD SYMBOL NAME CNECTOR REMOTE SWITCH CENTRALLY CTROL REMOTE INDICATI CN CN CN SW SW SW ZNR FUSE LED LED SWITCH VARISTOR FUSE (T.AL0V) POWER SUPPLY (I.B) POWER SUPPLY (I.B) CAPACITY CODE MODE SELECTI MODEL SELECTOR LED on indoor board for service MARK MEANIN LED LED Main power supply Power supply for MA-Remote controller PFFY-P0VKM-ER PFFY-PVKM-ER PFFY-PVKM-ER PFFY-P0VKM-ER MF MF MV MV LS LEV TB TB TH TH FAN MOTOR (UPPER) FAN MOTOR (LOWER) VANE MOTOR DAMPER MOTOR DAMPER LIMIT SWITCH (CLOSE) LINEAR EXPANSI VALVE TERMINAL BLOCK THERMISTOR LEV POWER SUPPLY TRANSMISSI ROOM TEMP. DETECTI (0 /k, /.k ) PIPE TEMP. DETECTI/LIQUID (0 /k, /.k ) TH TH TH LS SYMBOL TH A. B NAME PIPE TEMP. DETECTI/AS (0 /k, /.k ) ADDRESS BOARD SWITCH MODE SELECTI ADDRESS SETTIN s DIIT ADDRESS SETTIN 0ths DIIT BRANCH NO. AIR OUTLET SELECTI NOTES. At servicing for outdoor unit, always follow the wiring diagram of outdoor unit.. In case of connecting MA-Remote controller, please connect MA remote controller cable in an accessory to the connecter. (Remote controller wire is non-polar.). In case of using M-NET, please connect to TB. (Transmission line is non-polar.). Symbol [S] of TB is the shield wire connection.. Symbols used in wiring diagram above are, : terminal block, : connector.. The setting of the SW dip switches differs in the capacity. For the detail, refer to fig.. FUNCTI Main power supply (Indoor unit: 0-0V) power on Iamp is Iit Power supply for MA-remote controller on Iamp is lit SW SW SW SW SWC <fig. > MODELS SW P0 P P P0 MF MF POWER SUPPLY 0-0V 0Hz RED BLK WHT BRN BLU RED BLK WHT BRN BLU TB L RED N BLU RN/YLW TO OUTDOOR UNIT BC CTROLLER REMOTE CTROLLER DC-0V BLK S(SHIELD) I.B CND (BLK) TB M M LED FUSE ZNR TO MA-REMOTE CTROLLER DC8.7-V CN (WHT) CN0 (WHT) CN (WHT) CN (BLK) CNMF (WHT) 8 7 CNMF (WHT) BLU BLU ORN ORN DC ~9V LED CNM (BLU) CN0 (WHT) CNA (BLU) BLU PNK YLW SWE CN (RED) CNV (BLU) ORN RED BRN MV CN CN (RN) (WHT) CN (WHT) CNV (RN) BLU PNK YLW CN8 (RED) ORN SW SW SW 7 8 RED BRN MV 7890 8 A.B CN (RED) SW 8 7 CN8 (RED) 7890 SW SWC SW SW 0 0 0 See fig: BRANCH NO. s DIIT 0ths DIIT
9 REFRIERANT SYSTEM DIARAM PFFY-P0VKM-E PFFY-PVKM-E PFFY-PVKM-E PFFY-P0VKM-E PFFY-P0VKM-ER PFFY-PVKM-ER PFFY-PVKM-ER PFFY-P0VKM-ER Thermistor (Pipe temperature detection/as) TH Strainer (#0mesh) as pipe Thermistor (Pipe temperature detection/liquid) TH Flare connection Heat exchanger Liquid pipe Linear expansion valve Strainer (#0mesh) Strainer (#0mesh) Strainer (#00mesh) Thermistor (Room temperature detection) TH Capacity Item as pipe Liquid pipe PFFY-P0,P,P,P0VKM-E(R).7(/'').(/'') Unit: mm
0 TROUBLE SHOOTIN 0-. HOW TO CHECK PFFY-P0VKM-E PFFY-P0VKM-ER PFFY-PVKM-E PFFY-PVKM-ER PFFY-PVKM-E PFFY-PVKM-ER PFFY-P0VKM-E PFFY-P0VKM-ER Parts name Check points Room temperature thermistor (TH) Liquid pipe temperature thermistor (TH) as pipe temperature thermistor (TH) Disconnect the connector then measure the resistance using a tester. (Surrounding temperature 0 ~0 ) Normal.k ~9.k Abnormal Open or short (Refer to the next page for a detail.) Fan motor (MF,) Check 0-. Linear expansion valve (LEV) M White Red Orange Blue Brown Yellow Disconnect the connector then measure the resistance valve using a tester. (Surrounding temperature 0 ) ()-() White-Red ()-() Yellow-Brown Normal 00 0% ()-() Orange-Red ()-() Blue-Brown Abnormal Open or short (Refer to the next page for a detail.) Vane motor (MV) Red M Yellow Brown Orange reen Measure the resistance between the terminals using a tester. (Surrounding temperature 0 ~0 ) Connector Brown Red Brown Orange Brown Yellow Brown Blue Normal 8~0 Abnormal Open or short Damper motor (MV) Orange Red Pink M Yellow Brown Blue Measure the resistance between the terminals using a tester. (Surrounding temperature 0 ~0 ) Connector Brown Yellow Brown Blue Red Orange Red Pink Normal 8~ Abnormal Open or short
<Thermistor Characteristic graph> Thermistor for lower temperature Room temperature thermistor (TH) Liquid pipe temperature thermistor (TH) as pipe temperature thermistor (TH) 0 0 < Thermistor for lower temperature > Thermistor R0=k' ± % Fixed number of B=80 ± % Rt=exp { 80( ) } 7+t 7 0: k' 0: 9.k' 0:.k' :.k' 0:.k' 0:.0k' Resistance (K ) 0 0 0 0-0 -0 0 0 0 0 0 0 Temperature ( ) Linear expansion valve Operation summary of the linear expansion valve. Linear expansion valve open/close through stepping motor after receiving the pulse signal from the indoor controller board. Valve position can be changed in proportion to the number of pulse signal. <Connection between the indoor controller board and the linear expansion valve> Controller board DCV Linear expansion valve Brown Blue Red Drive circuit White Red M Brown Yellow Orange Blue Orange Yellow White Connector (CN0)
<Output pulse signal and the valve operation> Output (Phase) { Output Closing a valve : Opening a valve : The output pulse shifts in above order. { { { When linear expansion valve operation stops, all output phase become. At phase interruption or when phase does not shift in order, motor does not rotate smoothly and motor locks and vibrates. Linear expansion valve operation D C When the switch is turned on, 00 pulse closing valve signal will be send till it goes to A point in order to define the valve position. Valve position (capacity) A E Close Open Outdoor unit valve. R0A model: 00 pulse R model : 000 pulse Opening a valve all the way When the valve move smoothly, there is no noise or vibration occurring from the linear expansion valve : however, when the pulse number moves from E to A or when the valve is locked, more noise can be heard than normal situation. Noise can be detected by placing the ear against the screw driver handle while putting the screw driver to the linear expansion B Pulse number Extra tightning (80~00pulse) Trouble shooting Symptom Operation circuit failure of the micro processor. Linear expansion valve mechanism is locked. Short or breakage of the motor coil of the linear expansion valve. Valve does not close completely. Wrong connection of the connector or contact failure. Check points Countermeasures Disconnect the connector on the controller board, Exchange the indoor then connect LED for checking. controller board at drive circuit failure. LED Pulse signal will be sent out for 0 seconds as soon as the main switch is turned on. If there is LED with lights on or lights off, it means the operation circuit is abnormal. Motor will idle and make ticking noise when motor is operated while the linear expansion valve is locked. This ticking sound is the sign of the abnormality. Measure the resistance between the each coil (red-white, red-orange, brown-yellow, brown-blue) using a tester. It is normal if the resistance is in the range of 0'±0%. To check the linear expansion valve, operate the indoor unit in fan mode and at the same time operate other indoor units in cooling mode, then check the pipe temperature <liquid pipe temperature> of the indoor unit by the outdoor multi controller board operation monitor. During fan operation, linear expansion valve is closed completely and if there Liquid pipe thermistor Linear expansion valve are some leaking, detecting temperature of the thermistor will go lower. If the detected temperature is much lower than the temperature indicated in the remote controller, it means the valve is not closed all the way. It is not necessary to exchange the linear expansion valve, if the leakage is small and not making any trouble. Check the color of lead wire and missing terminal of the connector. 7 Exchange the linear expansion vale. Exchange the linear expansion valve. If large amount of refrigerant is leaked, exchange the linear expansion valve. Disconnect the connector at the controller board, then check the continuity.
0-. FAN MOTOR Check method of indoor fan motor (fan motor/control P.C.board) Notes High voltage is applied to the connecter (CNMF) for the fan motor. Pay attention to the service. Do not pull out the connector (CNMF,) for the motor with the power supply on. (It causes trouble of the control P.C.board) Self check Conditions : The indoor fan cannot turn around. Wiring contact check Contact of fan motor connector (CNMF,) Was contact caused good? Yes N0 Wiring recovery Power supply check Check the voltage in the indoor control P.C.board TEST POINT FAN MOTOR (upper) CNMF CNMF : DC0 ~ 0V CNMF : DCV CNMF : DC0 ~.V FAN MOTOR (lower) CNMF CNMF : DC0 ~ 0V CNMF : DCV CNMF : DC0 ~.V The voltage between CNMF and are values during the fan motor operation. In the case that the fan motor off, the voltage is 0V. Is the voltage normal? No Indoor controller board fuse check Yes Is the fuse normal? Yes Replace the indoor controller board. N No Replace the fuse. Check the operation OK END Check the operation OK END Fan motor position sensor signal check Turn around the fan motor more than one revolution slowly, and check the voltage between the connecter FAN MOTOR (upper) CNMF /FAN MOTOR (lower) CNMF N Replace the fan motor. Does the voltage repeat DC 0V and DC V? Yes Replace the indoor controller board. OK No Replace the fan motor. Yes OK Check the operation of fan. N Replace the indoor controller board. END Check the operation END N Replace the fan motor. 8
0-. FUNCTI OF DIP SWITCH Switch Pole Function Operation by switch Effective timing Remarks Thermistor <Room temperature detection> position Built-in remote controller Indoor unit Address board Filter clogging detection Provided Not provided <Initial setting> Filter cleaning,00hr 00hr Fresh air intake Effective Not effective 7 8 9 0 SW Switching remote Indicating if the Indicating fan operation Under Note : controller display thermostat is / Function suspension Fan operation at Heating setting Humidifier control Always operated while the heat in Operated depends on the condition mode. 7 Thermo operation at Air flow set in case of Low Extra low heating mode. 8 Heat thermostat Setting air flow Depends on SW-7 SW -7=, SW -8= 9 Auto restart function Effective Not effective Setting air flow. SW -7=, SW -8= 0 Power / by breaker Effective Not effective Indoor fan stop. Indoor controller board Capacity SW Capacity SW Set while the unit is off. SW Capacity code setting ~ P0 P P P0 Before power supply <Initial setting> Set for each capacity. Heat pump/cooling only Limitation at time of damper open operation Cooling only Not effective Heat pump Effective Indoor controller board Set while the unit is off. <Initial setting> Vane Vane swing function Available Available Not available Not available 7 8 9 0 SW Function setting 7 8 9 Vane horizontal angle Vane cooling limit angle setting Changing the opening of linear expansion valve during thermo Heat degrees up Superheat setting temperature Second setting 7 Horizontal angle Effective Not effective First setting Down B, C Not effective Effective Under suspension Note : Refer to ". AIR OUTLET SELECTI" At cooling mode, each angle can be used only hour. Please do not use SW-9,0. 7 Second setting is the same as first setting. 0 Sub cool setting temperature SW Model Selection (Setting for PFFY series) ~ In case replacing the indoor controller board, make sure to set the switch to the factory-preset status, which is shown below. Before power supply Indoor controller board 9
Switch Pole Operation by switch Effective timing Remarks Address board SWC Air outlet selector (Option) (Standard) Refer to. AIR OUTLET SELECTI. <Initial setting> Option Standard SW s digit address setting SW 0ths digit address setting SW Branch No. setting Rotary switch Rotary switch SW 0 9 8 7 0 E D C B SW 0 9 8 7 SW A F 9 0 8 7 How to set address Example : If address is "", remain SW (for over 0) at "0", and match SW (for to 9) with "". How to set branch number SW (Series R only) Match the indoor unit s refrigerant pipe with the BC contoller s end connection number Remain other than series R at "0". Before power supply Address board Address can be set while the unit is stopped. <Initial setting> SW 0 9 8 7 E D C B A F 9 0 8 SW 0 9 8 7 7 Address board <Initial setting> SW Connector Setting by connector Remarks SWE No function Please do not change the setting to SWE. Indoor controller board 0
0-. TEST POINT DIARAM 0--. Indoor controller board PFFY-P0VKM-E PFFY-P0VKM-ER PFFY-PVKM-E PFFY-PVKM-ER PFFY-PVKM-E PFFY-PVKM-ER PFFY-P0VKM-E PFFY-P0VKM-ER FUSE.A 0V CND Power supply - : 0-0V AC CNMF, CNMF FAN motor (upper) CNMF-CNMF : DC80V CNMF- : V DC CNMF- : 0-.V DC CNMF7- : 0-V DC FAN motor (lower) CNMF-CNMF : DC80V CNMF- : V DC CNMF- : 0-.V DC CNMF8- : 0-V DC CNM Connect to the terminal block TB (M-NET transmission connecting wire) -0V DC (non-polar) LED Main power supply LED Power supply for MA-Remote controller CNA MA-Remote controller connecting wire - 8.7-V DC (Pin (+)) CN Drain sensor (DS) CN0 Linear expansion valve (LEV) CNV Damper motor CN0 Room thermistor/liquid (TH) CNV Vane motor CN Pipe temperature -: thermistor/liquid (TH) -: thermistor/as (TH) CN Connector (Remote switch) CN Damper limit switch SW Capacity setting SW Function setting SW Model setting CN Remote indication CN Centrally control
0--. Address board PFFY-P0VKM-E PFFY-PVKM-E PFFY-PVKM-E PFFY-P0VKM-E PFFY-P0VKM-ER PFFY-PVKM-ER PFFY-PVKM-ER PFFY-P0VKM-ER SW Function setting SW 0ths digit address setting SW s digit address setting SWC Air outlet selection
DISASSEMBLY PROCEDURE PFFY-P0VKM-E PFFY-PVKM-E PFFY-PVKM-E PFFY-P0VKM-E PFFY-P0VKM-ER PFFY-PVKM-ER PFFY-PVKM-ER PFFY-P0VKM-ER OPERATIN PROCEDURE PHOTOS. Removing the panel () Push both sides of the upper part of the front grille and pull the front grille open, and then remove the front grille from the panel. (See Photo.) () Remove the screws of the panel. (See Photo.) () Open the horizontal vane and push the left, right and middle of the upper part of the panel, and pull the panel toward you. (See Photo.) () Lift up the panel and remove it from the box. Photo Push Push rille Photo Horizontal vane Screws of the panel Push Push Push
OPERATIN PROCEDURE PHOTOS. Removing the indoor controller board and address board () Remove the panel. (Refer to.) () Remove the screw of the electrical cover, and then the electrical cover. (See Photo.) () Remove the screw of the ground wires connected to the indoor fan motor (lower), and then the ground wires. (See Photo.) () Remove the screw of the ground wires connected to the indoor heat exchanger, and then the ground wires. (See Photo.) () Disconnect all the connectors on the address board and remove the screw of the address board case. () Remove the screw of the ground wire connected to the indoor controller board, and then the ground wire. (See Photo.) (7) Pull the indoor controller board case slightly toward you from the electrical box, and disconnect all the connectors on the indoor controller board. (8) Pull out the indoor controller board case from the electrical box. Photo Hair pin cover Water cover Screw of the electrical cover Photo Address board (A.B) Screw of the ground wire (I.B). Removing the electrical box () Remove the panel. (Refer to.) () Remove the electrical cover. (Refer to.) () Remove the ground wires from the electrical box. (Refer to.) () Remove the ground wires connected to the indoor fan motor and ones connected to the indoor heat exchanger. (See Photo.) () Remove the screw of the electrical box. (See Photo.) () Disconnect the following connectors on the indoor controller board. Fan motor connectors <CNMF, > Vane motor connector <CNV> Damper motor connector <CNV> Pipe temperature thermistor connector <CN> Damper limit switch connector <CN> (7) Unhook the electrical box from the upper catch and pull out the electrical box from the box. Terminal block (TB) Terminal block(tb) Screw of the ground wire (Heat exchanger) Indoor controller board (I.B) Screw of the ground wire (Fan motor)
OPERATIN PROCEDURE PHOTOS. Removing the vane motor (MV) () Remove the panel. (Refer to.) () Remove the screws of the vane motor and pull out the vane motor. (See Photo.) () Disconnect the connector from the vane motor. Photo Screw of vane motor. Removing the indoor fan motor (upper) () Remove the panel. (Refer to.) () Remove the electrical box. (Refer to.) () Remove the nozzle (upper). (See Photo.) () Unhook the water cover from the catches and remove the water cover. (See Photo.) () Removing the screw of the motor band, and then the motor band. (See Photo 7.) () Remove the line flow fan and the indoor fan motor (upper) from the box. Photo Nozzle <Upper> Water cover Photo 7 Screw of motor band
OPERATIN PROCEDURE PHOTOS. Removing the damper motor and the damper limit switch () Remove the panel. (Refer to.) () Remove the screws of the nozzle assembly (lower). (See Photo 8.) () Remove the drain hose from the nozzle assembly (lower) and pull out the nozzle assembly (lower) toward you. () Remove the tape fixing the lead wires of the damper motor from the nozzle assembly <lower>. (See Photo 9.) () Remove the screws of the damper motor support, and then the damper motor support. () Remove the screws of the damper motor, and then the damper motor from the damper motor support. (7) Disconnect the connector from the damper motor. (8) Remove the damper limit switch. (LS). Photo 8 Screw of the nozzle Screw of the nozzle Drain hose Photo 9 7. Removing the indoor fan motor () Remove the panel. (Refer to.) () Remove the nozzle assembly (lower) and the drain hose. (Refer to.) () Remove the screw of the ground wire of the indoor fan motor (lower), and then the ground wire. (See Photo.) () Remove the screw of the motor band, and then the motor band. (See Photo.) () Remove the line flow fan and the indoor fan motor (lower) from the box. Lead wires of the damper motor Photo 0 Screw of the damper motor support Screw of the damper motor Photo Screw of the motor band Screw of the ground wire
OPERATIN PROCEDURE 8. Removing the pipe temperature detection (liquid and gas) thermistors and room temperature thermistor () Remove the panel. (Refer to.) () Remove the screw of the electrical cover, and then the electrical cover. (See photo ) () Remove the pipe temperature detection (liquid and gas) thermistors from the holders. () Disconnect the connector CN on the indoor controller board. () Loosen the room temperature thermistor wire clamp under the electrical box. () Disconnect the connector CN0 on the indoor controller board. Photo Thermistor (as/th) PHOTOS Thermistor (Liquid/TH) Room temperature thermistor (TH) 9. Removing the heat exchanger and linear expansion valve () Remove the panel. (Refer to.) () Remove the hair pin cover and water cover (See Photo.) () Remove the screws of the heat exchanger. (See Photo.) () Unhook the heat exchanger from catches (electrical box side). () Pull out the heat exchanger and linear expansion valve. Photo Photo Heat exchanger Screws of the heat exchanger Hair pin cover 7
RoHS PARTS LIST -. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIAL PARTS PFFY-P0VKM-E PFFY-P0VKM-ER PFFY-PVKM-E PFFY-PVKM-ER PFFY-PVKM-E PFFY-PVKM-ER PFFY-P0VKM-E PFFY-P0VKM-ER 7 7 8 9 0 0 8 9 8
-. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIAL PARTS Part number that is circled is not shown in the illustration. No. 7 8 9 0 7 8 9 0 RoHS Symbol Q'ty/unit Part No. Part name in Wiring PFFY-P0///0 Remarks Diagram VKM-E VKM-ER MV UP & DOWN LS T7W E00 0 T7W E07 00 T7W E0 00 T7W E0 0 T7W E00 0 T7W E0 0 T7W E08 T7W E09 0 T7W E00 70 T7W E00 7 T7W E0 7 R0 E09 7 T7W E08 00 T7W E0 T7W E 7 T7W E00 0 T7W E08 0 T7W E 7 R0 E7 R0 H8 0 R0 H08 0 T7W E7 7 T7W E 0 T7W E80 0 T7W E0 9 T7W E07 T7W E0 R0 E0 9 T7W E0 0 NOZZLE ASSEMBLY (UPPER) HORIZTAL VANE (UPPER) HORIZTAL VANE (LOWER) VANE SLEEVE BEARIN ASSEMBLY NOZZLE ASSEMBLY (LOWER) DAMPER MOTOR VANE MOTOR SUPPORT SM SHAFT DAMPER LIMIT SWITCH (CLOSE) DRAIN HOSE DRAIN HOSE VANE UNDER LINE FLOW FAN (LOWER) INDOOR FAN MOTOR (LOWER) RUBBER MOUNT (L,R) MOTOR BAND INDOOR FAN MOTOR (UPPER) TERMINAL BLOCK ROOM TEMPERATURE THERMISTOR ROOM TEMPERATURE THERMISTOR TERMINAL BLOCK INDOOR CTROLLER BOARD INDOOR CTROLLER BOARD ADDRESS BOARD VANE MOTOR (SET) LINE FLOW FAN (UPPER) FUSE ADDRESS CABLE MF MF TB TH TH TB I.B I.B A.B MV FUSE ARW0Y8P0MS ARW0Z8P0MS P (M, M, S) P (L, N, ) UP&DOWN.A 9
-. STRUCTURAL PARTS PFFY-P0VKM-E PFFY-P0VKM-ER PFFY-PVKM-E PFFY-PVKM-ER PFFY-PVKM-E PFFY-PVKM-ER PFFY-P0VKM-E PFFY-P0VKM-ER -. STRUCTURAL PARTS No. RoHS Q'ty/unit Symbol Part No. Part name in Wiring PFFY-P0///0VKM-E Remarks Diagram PFFY-P0///0VKM-ER T7W E0 T7W E0 T7W E0 9 T7W E0 00 T7W E0 808 BOX PANEL ASSEMBLY FRT PANEL CATECHIN AIR FILTER BACK PLATE 0
-. INDOOR UNIT HEAT EXCHANER PFFY-P0VKM-E PFFY-P0VKM-ER PFFY-PVKM-E PFFY-PVKM-ER PFFY-PVKM-E PFFY-PVKM-ER PFFY-P0VKM-E PFFY-P0VKM-ER -. INDOOR UNIT HEAT EXCHANER No. Part No. Part name Symbol in Wiring Q'ty/unit PFFY-P0///0 Remarks Diagram VKM-E VKM-ER RoHS T7W E00 0 T7W H 80 T7W E0 0 T7W E 0 T7W E9 0 R0 H 0 HAIR PIN COVER INDOOR HEAT EXCHANER WATER COVER PIPE TEMPERATURE THERMISTOR EXPANSI VALVE EXPANSI VALVE TH,TH LEV LEV
TM HEAD ICE : TOKYO BLD., -7-, MARUNOUCHI, CHIYODA-KU, TOKYO 00-80, JAPAN C Copyright 00 MITSUBISHI ELECTRIC ENINEERIN CO.,LTD Distributed in Nov. 008 No. OC0 REVISED EDITI-A PDF 7 Distributed in Jul. 00 No. OC0 PDF 8 Made in Japan New publication, effective Nov. 008 Specifications subject to change without notice.