SPLIT-TYPE, HEAT PUMP AIR CDITIERS November No. OCH REVISED EDITI-A TECHNICAL & SERVICE MANUAL RA R7C R Indoor unit [Model names] PKFY-PVBM-E PKFY-PVBM-E PKFY-PVBM-E [Service Ref.] PKFY-PVBM-E PKFY-PVBM-E PKFY-PVBM-ER PKFY-PVBM-E PKFY-PVBM-ER Revision: PKFY-PVBM-E and PKFY- P/VBM-ER are added in REVISED EDITI-A. Some descriptions have been modified. Plase void OCH. Note: This manual describes only service data of the indoor units. RoHS compliant products have <G> mark on the spec name plate. CTENTS INDOOR UNIT Model name indication. TECHNICAL CHANGES.... SAFETY PRECAUTI.... PART NAMES AND FUNCTIS.... SPECIFICATI.... OUTLINES AND DIMENSIS.... WIRING DIAGRAM... 7. REFRIGERANT SYSTEM DIAGRAM.... TROUBLESHOOTING.... DISASSEMBLY PROCEDURE... PARTS CATALOG (OCB)
TECHNICAL CHANGES PKFY-PVBM-E PKFY-PVBM-E PKFY-PVBM-ER PKFY-PVBM-ER INDOOR CTROLLER BOARD (I.B.) has been changed. SAFETY PRECAUTI CAUTIS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R7C Do not use the existing refrigerant piping. The old refrigerant and lubricant in the existing piping contain 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 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 enters, that can cause deterioration of refrigerant oil etc. Do not use a refrigerant other than R7C. 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. R7C cylinder 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. [] Service tools Use the below service tools as exclusive tools for R7C refrigerant. No. Tool name Specifications Gauge manifold Only for R7C Use the existing fitting SPECIFICATIS. (UNF7/) Use high-tension side pressure of.mpa G or over. Charge hose Electronic scale Only for R7C Use pressure performance of.mpa G or over. Gas leak detector Use the detector for Ra or R7C. Adapter for reverse flow check Attach to vacuum pump. Refrigerant charge base Refrigerant cylinder For R7C Top of cylinder (Brown) Cylinder with syphon Refrigerant recovery equipment
Cautions for units utilizing refrigerant RA 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 enters 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 enters, 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 RA refrigerant. The following tools are necessary to use RA refrigerant. Tools for RA Gauge manifold Flare tool Charge hose Size adjustment gauge Gas leak detector Vacuum pump adaptor Torque wrench Electronic refrigerant charging scale Handle tools with care. If dirt, dust or moisture enters 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 RA. 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 RA on the market is syphon type. Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.) Unit Gravimeter [] Service tools Use the below service tools as exclusive tools for RA refrigerant. No. Tool name Specifications Gauge manifold Only for RA Use the existing fitting specifications. (UNF/) Use high-tension side pressure of.mpa G or over. Charge hose Only for RA Use pressure performance of.mpa G or over. Electronic scale Gas leak detector Use the detector for Ra, R7C or RA. Adaptor for reverse flow check Attach to vacuum pump. Refrigerant charge base 7 Refrigerant cylinder Only for RA Top of cylinder (Pink) Cylinder with syphon Refrigerant recovery equipment
PART NAMES AND FUNCTIS Indoor unit Air intake Filter Grille Louver Vane Air outlet
Wired remote controller Display Section 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 available. 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, the time to be switched off is shown. Sensor indication Displayed when the remote controller sensor is used. Locked indicator Indicates that remote controller buttons have been locked. Clean The Filter indicator To be displayed on when it is time to clean the filter. Centrally Controlled indicator Indicates that operation from 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 or downward during COOL or DRY mode. (Operation varies according to model.) The indicator goes off in one hour, at which time the airflow direction also changes. FUNCTI FILTER WEEKLY SIMPLE AUTO Room Temperature display Shows the room temperature. The room temperature display range is. The display blinks if the temperature is less than or or more. Louver display Indicates the action of the swing louver. Does not appear if the louver is not running. (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. Operation Section Temperature setting buttons Down Up Timer Menu button (Monitor/Set button) Mode button (Return button) / button Fan Speed 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 lid To return operation number Built-in temperature sensor Ventilation button ( Operation button) Note: PLEASE WAIT message This message is displayed for approximately minutes when power is supplied to the indoor unit or when the unit is recovering from a power failure. NOT AVAILABLE message This message is displayed if an invalid button is pressed (to operate a function that the indoor unit does not have). If a single remote controller is used to operate multiple indoor units simultaneously that are different types, this message will not be displayed as far as any of the indoor units is equipped with the function. 7 To go to next operation number
Wireless remote controller CHECK TEST RUN display CHECK and TEST RUN display indicate that the unit is being checked or test-run. MODEL SELECT display Blinks when model is selected. display Lights up while the signal is transmitted to the indoor unit when the button is pressed. display SET TEMP. display indicates the set desired temperature. display OPERATI MODE display Operation mode display indicates which operation mode is in effect. display The vertical direction of air flow is indicated. display FAN SPEED display indicates which fan speed has been selected. / button The unit is turned and alternately each time the button is pressed. FAN SPEED SELECT button Used to change the fan speed. MODE SELECT button Used to switch the operation mode between cooling, drying, fan, heating and auto mode. In case the outdoor unit is cool only type, the heating and auto mode are not available. CHECK-TEST RUN button Only press this button to perform an inspection check or test operation. Do not use it for normal operation. VANE CTROL button Used to change the air flow direction. / TEMP MODE CHECK CHECK TEST RUN MODEL SELECT C AMPM AMPM NOT AVAILABLE FAN AUTO STOP VANE AUTO START LOUVER h TEST RUN min SET RESET CLOCK CLOCK display Displays the current time. TIMER display Displays when in timer operation or when setting timer. display Displays the order of timer operation. display Displays whether timer is on or off. button SET TEMPERATURE button sets any desired room temperature. TIMER CTROL buttons AUTO STOP ( timer): when this switch is set, the air conditioner will be automatically stopped at the preset time. AUTO START ( timer): when this switch is set, the air conditioner will be automatically started at the preset time. h and min buttons Buttons used to set the hour and minute of the current time and timer settings. LOUVER button Changes left/right airflow direction. (Not available for this model.) CLOCK button RESET button SET button
SPECIFICATI -. SPECIFICATIS Model PKFY-PVBM-E PKFY-PVBM-E(R) PKFY-PVBM-E(R) Power source Cooling capacity (Nominal) Heating capacity (Nominal ) External finish External dimension H x W x D Net weight Heat exchanger Fan Noise level (Low-Mid-Mid-High) (measured in anechoic room) Insulation material Air filter Protection device Refrigerant control device Connectable outdoor unit Diameter of refrigerant pipe Power input Current input Power input Current input * * * * * * * Type x Quantity External static press. Motor type Motor output Driving mechanism Airflow rate (Low-Mid-Mid-High) kw kcal/h Btu/h kcal/h kw A kw kcal/h Btu/h kw A mm in. kg (lb) Pa mmho kw m /min L/s cfm db <A> Liquid (RA) mm (in.) (R, R7C) Gas (RA) mm (in.) (R, R7C) Field drain pipe size mm (in.) Standard Document attachment Accessory Remark Optional parts External LEV Box.7,,,...,,.. -/" -/" -7/" () Line flow fan.7. -. -. -. - - 7-7 - 77 - - 7 - - - ø. (ø/") ø. (ø/") ø.7 (ø/") ø.7 (ø/") Flare I.D. mm (/") PAC-SGLE-E Flare Flare Flare -phase -V Hz, -phase V Hz., 7,,...,,.. Plastic, MUNSELL (.Y./.) -/" -/" -7/" () Cross fin (Aluminum fin and copper tube) Line flow fan -phase induction motor.7 Direct-driven by motor. -. -. -. - 7 - - 7 - - - - - - Polyethylene sheet PP honeycomb Fuse LEV RA, R7C, R CITY MULTI ø. (ø/") ø. (ø/") ø.7 (ø/") ø.7 (ø/") Flare I.D. mm (/") Installation Manual, Instruction Book PAC-SGLE-E Flare Flare Flare.,,,...,,.. -/" -/" -7/" () Line flow fan.7. -. -. -. - 7 - - 7 - - - - - - ø. (ø/") ø. (ø/") ø.7 (ø/") ø.7 (ø/") Flare I.D. mm (/") PAC-SGLE-E Flare Flare Flare Installation Note : * Nominal cooling conditions * Nominal cooling conditions Indoor : Outdoor : Pipe length : Level difference : 7 CDB/ CWB ( FDB/ FWB) CDB ( FDB) 7. m (-/ ft) m ( ft) 7 CDB/. CWB ( FDB/7 FWB) CDB ( FDB) m (-/ ft) m ( ft) * Nominal conditions *, * are subject to JIS B-. * Due to continuing improvement, above specification may be subject to change without notice. Details on foundation work, duct work, insulation work, electrical wiring, power source switch, and other items shall be referred to the Installation Manual. * Nominal heating conditions Unit converter kcal/h = kw Btu/h = kw, CDB ( FDB) 7 CDB/ CWB ( FDB/ FWB) 7. m (-/ ft) m ( ft) cfm = m /min. lb = kg/. *Above specification data is subject to rounding variation.
-. ELECTRICAL PARTS SPECIFICATIS Parts name Room temperature thermistor Model Liquid pipe thermistor Symbol TH TH PKFY-PVBM-E PKFY-PVBM-E(R) PKFY-PVBM-E(R) Resistance /k, /.k, /.k, /.k, /.k, /.k Resistance /k, /.k, /.k, /.k, /.k, /.k Gas pipe thermistor Fuse (Indoor controller board) Fan motor (with thermal fuse) Fan motor capacitor Vane motor (with limit switch) Linear expansion valve Power supply terminal block Transmission terminal block TH FUSE MF C MV LEV TB TB Resistance /k, /.k, /.k, /.k, /.k, /.k V.A -Pole Output 7W / PSV7-KB. V MSFBC DCV DCV Stepping motor drive Port. (~pulse) (L, N, ) V A (M, M) V A
Knockout hole of right piping Knockout hole for remocon wiring Operation lamp Air intake.7 (Direction) -. hole -. hole Installation plate Power supply Transmission Terminal block Address board Air intake (Direction) Address board Connection No. Detailed Address setting digit Terminal block Detailed Power supply (-V) The second side Transmission (DC -V) Mode selection * Address board is protected With PL cover. Remove the screw with driver on the occasion of setting. M M mm or more for left and left back piping. The first side MA-remote controller (DC.7-V) There is not MA-remote controller terminal block. Connection with MA-remote controller refers to Note. L N OUTLINES AND DIMENSIS PKFY-P,, VBM-E PKFY-P, VBM-ER Detail of installation plate Installation plate balance point hole 7. Knock of hole Note. Use M or W/ screw for installation plate. Note. Extension piping side. Note. In case of connecting MA-remote controller, please connect MA-remote controller cable (accessory) to the connector. R R.. -. 7 hole -. hole 7-. hole -. hole - hole Piping hole R R. Air outlet 7. Installation plate Air outlet (Direction) 7. Installation space Min mm Min mm Min mm Min mm Max mm /F(.mm) Liquid pipe /F(.7mm) Gas pipe Refrigerant piping mm(i.d) Drain pipe Emergency operation switch <Cooling> Receiver Emergency operation switch <Heating> 7. Air intake 7 7 Air intake Air intake Air outlet (Drain pipe total 7) Gas pipe Liquid pipe 7. 7. Air outlet 7. Address board 7 7. DEFROST/STAND BY lamp 7. 7 7 Unit : mm. 7.. Detailed figure dwg(a B C) (Knock out hole) Knockout hole for left piping. R R Knockout hole for under piping Knockout hole of remocon wiring R
WIRING DIAGRAM PKFY-P, VBM-E Legend Symbol I.B CN Connector CN CN SW Switch SW P.B ZNR Varistor Name Indoor controller board Indoor power board Remote switch Centrally control Remote indication Capacity code Mode selection FUSE Fuse (.A V) F.C Fan phase control C Capacitor (fan motor) MF Fan motor W.B SW A.B SW V V SW 7 SW ths DIGIT SW BZ RU LED LED SW s DIGIT CNB M LEV (RED) ADDRESS CN (RED) ADDRESS CN SW BRANDH No. BRN RED BLU ORN YLW WHT CN LED on indoor board for service Mark Meaning Function LED Main power supply Main power supply (indoor unit:-v) power on lamp is lit LED Power supply for Power supply for MA-Remote controller MA-Remote controller on lamp is lit <*> MODELS SW MODELS SW Symbol Name Symbol Name MV Vane motor SW Switch Voltage selection LEV Linear expansion valve SW Address setting s digit TB Terminal Power supply SW Address setting ths digit TB block Transmission SW Connection No. TH Thermistor Room temp.detection W.B Wireless remote controller board ( /k, /.k ) RU Receving unit TH Pipe temp.detection/liquid BZ Buzzer ( /k, /.k ) LED LED (Operation indicator: Green) TH Pipe temp.detection/gas LED LED (Preparation for heating: Orange) ( /k, /.k ) SW Emergency operation (Heat) A.B Address board SW Emergency operation (Cool) SW Switch Mode selection RED WHT(PNK) BLU ORN YLW CN CNV CN LEV VANE WIRELESS CN CN (WHT) (BLU) (WHT) GAS LIQUID (BLK) (WHT) SW See fig :* I.B P.B Note. 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 connector. (Remote controller wire is non-polar.). In case of using M-NET, please connect to TB (Transmission line is non-polar.). 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 the fig :*.. Please set the switch SW according to the power supply voltage. Set SW to V side when the power supply is and volts. When the power supply is volts, set SW to V side. MV CN CN CN ADDRESS ADDRESS (RED) (RED) SW 7 M CN CN CNM (BLU) TH ORN ORN TH t t t CNA MA- CN INTAKE REMOC (RED) (BLU) CNM (RED) TH LED TO MA-REMOTE CTROLLER DC.7-V M ~ MF CNP (BLU) LED TO OUTDOOR UNIT BC CTROLLER M-NET REMOTE CTROLLER DC-V M M TB BLU BLU WHT RED BLK BLU RED FAN (GRN) CNM M-NET (BLU) CND (RED) C CNP (RED) F.C ZNR U FUSE V.A GRN /YLW TB L N BREAKER (A) TO NEXT INDOOR UNIT PULL BOX FUSE (A) POWER SUPPLY ~/N -V Hz ~/N V Hz P P
PKFY-PVBM-E PKFY-P, VBM-ER Legend Symbol I.B CN Connector CN CN SW Switch SW P.B ZNR Varistor Name Indoor controller board Indoor power board Remote switch Centrally control Remote indication Capacity code Mode selection FUSE Fuse (T.AL V) F.C Fan phase control C Capacitor (Fan motor) MF Fan motor Symbol Name Symbol Name MV Vane motor SW Switch Voltage selection LEV Linear expansion valve SW Address setting s digit TB Terminal Power supply SW Address setting ths digit TB block Transmission SW Connection No. TH Thermistor Room temp.detection W.B Wireless remote controller board ( /k, /.k ) RU Receving unit TH Pipe temp.detection/liquid BZ Buzzer ( /k, /.k ) LED LED (Operation indicator: Green) TH Pipe temp.detection/gas LED LED (Preparation for heating: Orange) ( /k, /.k ) SW Emergency operation (Heat) A.B Address board SW Emergency operation (Cool) SW Switch Mode selection W.B SW A.B SW V V SW 7 SW SW ths DIGIT SW BZ RU LED LED s DIGIT CNB (RED) ADDRESS CN (RED) ADDRESS CN SW BRANCH No. LEV M WHT YLW ORN BLU RED BRN CN CN CNV CN LEV VANE WIRELESS CN CN (WHT) (BLU) (WHT) GAS LIQUID (BLK) (WHT) SW CN SW 7 RED WHT BLU ORN YLW CN CN ADDRESS ADDRESS (RED) CN CN CNM (BLU) CNA MA- CN INTAKE REMOC (RED) (BLU) TO MA-REMOTE CTROLLER DC.7-V M ~ MF See fig :* I.B P.B Note. At servicing for outdoor unit, always follow the wiring diagram of outdoor unit.. In case of using MA-remote controller, please connect MA-remote controller cable in an accessory to the connector. (Remote controller wire is non-polar.). In case of using M-NET, please connect to TB (Transmission line is non-polar.). 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 the fig :*.. Please set the switch SW according to the power supply voltage. Set SW to V side when the power supply is and volts. When the power supply is volts, set SW to V side. (RED) M MV TH ORN ORN TH t t t CNM (RED) TH LED CNP (BLU) LED TO OUTDOOR UNIT BC CTROLLER M-NET REMOTE CTROLLER DC-V M M TB BLU BLU WHT RED BLK BLU RED FAN (GRN) CNM M-NET (BLU) CND (RED) C CNP (RED) F.C ZNR U FUSE V.A GRN /YLW TB L N BREAKER (A) TO NEXT INDOOR UNIT PULL BOX FUSE (A) POWER SUPPLY ~/N -V Hz ~/N V Hz LED on indoor board for service Mark Meaning LED LED Main power supply Power supply for MA-Remote controller Function Main power supply (indoor unit:-v) power on lamp is lit Power supply for MA-Remote controller on lamp is lit MODELS SW MODELS SW MODELS SW <*> P P P
7 REFRIGERANT SYSTEM DIAGRAM PKFY-PVBM-E PKFY-PVBM-E(R) PKFY-PVBM-E(R) Gas pipe temperature thermistor TH Gas pipe Liquid pipe temperature thermistor TH Strainer (#mesh) Flare Heat exchanger Room temperature thermistor TH Strainer (#mesh) Liquid pipe Linear expansion valve Strainer (#mesh) Item Gas pipe Models PKFY-PVBM-E PKFY-PVBM-E(R) PKFY-PVBM-E(R) {.7 (/ ) Unit: mm(inch) Liquid pipe {. (/ ) TROUBLESHOOTING -. HOW TO CHECK THE PARTS PKFY-PVBM-E PKFY-PVBM-E(R) PKFY-PVBM-E(R) Parts name Room temperature thermistor (TH) Liquid pipe temperature thermistor (TH) Gas pipe temperature thermistor (TH) Vane motor (MV) Orange Pink or White Red Connect pin No. M Yellow Blue Check points Disconnect the connector then measure the resistance using a tester. (At the ambient temperature ~ ) Normal.k ~.k Abnormal Open or short Refer to the next page for the details. Measure the resistance between the terminals using a tester. (At the ambient temperature ) Normal - Red-Pink or White - Red-Blue Normal 7% - Red-Orange - Red-Yellow Abnormal Open or short Fan motor (MF) FAN White Red Black Measure the resistance between the terminals using a tester. (At the ambient temperature ) Normal Abnormal White-Black Red-Black Open or short Linear expansion valve (LEV) White Yellow LEV Orange Blue Red Brown CN Disconnect the connector then measure the resistance valve using a tester. (Coil temperature ) ()-() White-Red Normal ()-() Yellow-Brown % ()-() Orange-Red ()-() Blue-Brown Abnormal Open or short
<Thermistor Characteristic graph> Thermistor for lower temperature Room temperature thermistor (TH) Liquid pipe temperature thermistor (TH) Gas pipe temperature thermistor (TH) < Thermistor for lower temperature > Thermistor R=k' ± % Fixed number of B= ± % Rt=exp { ( 7+t 7 ) } : k' :.k' :.k' :.k' :.k' :.k' Resistance (K ) - - Temperature ( ) Linear expansion valve Operation summary of the linear expansion valve Linear expansion valve opens/closes 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(CN) Note : Since the number of the connector at the controller board side and the relay connector are different, follow the color of the lead wire.
<Output pulse signal and the valve operation> Output (Phase) { { { { Output Linear expansion valve operation Open Valve position (capacity) A E Close Open D C Closing a valve : Opening a valve : The output pulse shifts in above order. Outdoor unit RA model : pulse Outdoor unit R/R7C model : pulse Opening a valve all the way 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 will lock and vibrate. When the switch is turned on, pulse closing valve signal will be sent till it goes to point A in order to define the valve position. When the valve moves smoothly, there is no noise or vibration occurring from the linear expansion valves : however, when the pulse number moves from E to A or when the valve is locked, more noise can be heard than in a normal situation. Noise can be detected by placing the ear against the screw driver handle while putting the screw driver tip to the linear expansion valve. Close B Pulse number Extra tightening (~ pulse) Troubleshooting 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 Check points Disconnect the connector on the controller board, then connect LED for checking. k LED Countermeasures Exchange the indoor controller board at drive circuit failure. When power is turned on, pulse signals will output for 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. Motor will idle and make a ticking noise when the motor is Exchange the linear expansion vale. operated while the linear expansion valve is locked. This ticking sound is the sign of the abnormality. Measure the resistance between each coil (white-red, yellowbrown, orange-red, blue-brown) using a tester. It is normal if the resistance is in the range of " ±%. Exchange the linear expansion valve. Valve doesn't close completely. Wrong connection of the connector or contact failure Thermistor (Liquid pipe) Linear expansion valve To check the linear expansion valve, operate the indoor unit If large amount of refrigerant is leaked, exchange in fan mode and at the same time operate other indoor units in cooling mode, then check the pipe temperature <liquid the linear expansion valve. 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 is any 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 affecting normal operation. Check the color of lead wire and missing terminal of the connector. Disconnect the connector at the controller board, then check the continuity.
-. FUNCTI OF DIP SWITCH PKFY-PVBM-E PKFY-PVBM-E(R) PKFY-PVBM-E(R) Switch Pole SW Mode selection 7 Function Thermistor<Intake temperature> position Filter clogging Provide Not provide Filter sign indication, hr hr Air intake Not effective Not effective Remote indication switching Thermo signal indication Fan output indication Thermo operation at Humidifier control Fan operation at Heating mode heating mode Air flow set in case of heat Low Extra low thermo Setting air flow Depends on SW-7 Auto restart function Effective Not effective Power / Effective Not effective MODEL Built-in remote controller Operation by switch SW Indoor unit Effective timing Under suspension NOTE: SW-7 Remarks Address board <Initial setting> 7 SW- Fan speed Extra low Low Setting air flow Stop It is impossible to intake the fresh air. Indoor controller board SW Capacity code switch ~ PKFY-PVBM-E PKFY-PVBM-E PKFY-PVBM-E Before power supply <Initial setting> Set for each capacity. SW Function selection 7 Heat pump/cool only Cooling only Heat pump Louver Vane Vane swing Available Not available Vane horizontal angle Second setting First setting Vane cooling limit angle setting Horizontal angle Down B,C Changing the opening of linear expansion valve Effective Not effective Heating degree up Not effective Effective Superheat setting temperature Subcool setting temperature Under suspension Indoor controller board <Initial setting> 7 At cooling mode, each angle can be used only hour. Please do not use SW-, as trouble might be caused by the usage condition. Second setting is the same as first setting. 7
Switch Operation by switch Effective timing Remarks SW s digit address setting SW ths digit address setting Rotary switch SW 7 SW 7 How to set address Example : If address is "", remain SW (for over ) at "", and match SW (for to ) with "". Address board <Initial setting> SW SW 7 7 SW Branch No. Setting Rotary switch E D C B SW A F 7 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 "". Before power supply Address board <Initial setting> SW E D C B A F 7 SW Voltage selection V V If the unit is used at the V or V area, set the voltage to V. If the unit is used at the V, set the voltage to V. Address board <Initial setting> V V J, J Wireless remote controller Pair No. Jumper To operate each indoor unit by each remote controller when installed indoor units or more are near, Pair No. setting is necessary. Pair No. setting is available with the patterns (Setting patterns A to D).. Make setting for J, J of indoor controller board and the Pair No. of wireless remote controller. You may not set it when operating it by one remote controller. Setting for indoor unit Jumper wire J, J on the indoor controller board are cut according to the table below. Wireless remote controller pair number: Setting operation. Press the SET button (using a pointed implimaent). Check that the remote controller s display has stopped before continuing. MODEL SELECT flashes, and the model No. ( digits) appears (steadily-lit).. Press the MINUTE button twice. The pair number appears flashing.. Press the temperature buttons to select the pair number to set.. Press the SET button (using a pointed implemet). The set pair number is displayed (steadily-lit) for seconds, then disappears. Under operation or suspension SET button <Initial setting> Pattern A / MODE CHECK TEST RUN SET MODEL SELECT FAN VANE LOUVER RESET TEMP CLOCK AUTO STOP AUTO START h min Pair No. Model No. Temperature button Minute button Setting pattern Indoor controller Pair No. of wireless jumper wire remote controller J J A B Cut C Cut D Cut Cut Pair No.- of wireless remote controller is setting pattern D. Initial setting
-. TEST POINT DIAGRAM --. Indoor controller board PKFY-PVBM-E PKFY-PVBM-E(R) PKFY-PVBM-E(R) CN Linear expansion valve output (LEV) CNV Vane motor output (MV) CN Connected to the address board (CN) CN Connected to the wireless remote controller board (W.B) CN Pipe temperature thermistor/gas (TH) CN Pipe temperature thermistor/liquid (TH) CN Connected to the address board (CN) CN Centrally control CNA Connected to the MA-Remote controller Between to.7-v DC (Pin (+)) CN Remote indication CN Room temperature thermistor (TH) SW Mode selection J, J Wireless remote controller Pair No. setting CN Connector (HA terminal-a) JP Model setting SW Capacity setting CN Connector (Remote switch) LED Power supply for MA-Remote controller CNM Connected to the indoor power board (CNP) CNM Connected to the indoor power board (CNP) Between to -V DC (non-polat) Between to.-.7v DC (Pin (+)) Between to.-.7v DC (Pin (+))
--. Indoor power board PKFY-PVBM-E PKFY-PVBM-E(R) PKFY-PVBM-E(R) CNM Connected to the terminal block (TB) (M-NET transmission connecting wire) -V DC (non-polar) FAN Fan motor output (MF) CND Power supply for indoor controller board Between to -V AC FUSE.A V CNP Connected to the indoor controller board (CNM) CNP Connected to the indoor controller board (CNM) Between to -V DC (non-polat) Between to.-.7v DC (Pin (+)) Between to.-.7v DC (Pin (+)) LED Main power supply (Indoor unit : -V) --. Address board PKFY-PVBM-E PKFY-PVBM-E(R) PKFY-PVBM-E(R) SW Function setting SW Address setting ths digit SW Address setting s digit
DISASSEMBLY PROCEDURE PKFY-PVBM-E PKFY-PVBM-E(R) PKFY-PVBM-E(R) Be careful when removing heavy parts. OPERATI PROCEDURE. REMOVING THE LOWER SIDE OF THE INDOOR UNIT FROM THE INSTALLATI PLATE PHOTOS & ILLUSTRATIS Figure Figure When there is removing plate () Remove the corner box at right lower side of the indoor unit and remove the removing plate from the corner box. (Figure ) () Insert the removing plate at the back side of the corner box to remove the indoor unit. () Remove the hook by pulling the lower side of the indoor unit down as shown in the Figure. When there is no removing plate or it cannot be used for some reason. () Remove the front panel. () Insert the screw driver to the corner hole at both left and right side as shown in the Figure. () Push it up, then pull down the lower side of indoor unit and remove the hook. Insert the edge Figure Indoor unit removing plate Pull Be careful not to damage the airflow adjustment plate with the screw driver. Push Push Corner hole Down Corner box. REMOVING THE FRT PANEL * Before removing the front panel, leave the open space at upper side of the vane approximately to cm. () Remove the screw caps then remove the set screws. (Refer to the Photo ) () Remove the grille. () Remove the left side of the front panel, then right side. () After removing the lower side of the front panel a little, remove it as pulling the upper side toward you. * Please pay attention to the nozzle assembly. Photo Grille INSTALLING THE FRT PANEL () Insert the lower side of the front panel under the vane. () Set the upper side of the front panel. (Figure ) () Set the lower side of the front panel then fix it with the screws. () Press the area indicated as arrow sign and set it to the air conditioner unit. () Attach the screw caps. Front panel Figure Set screws () Vane () Push ()
OPERATI PROCEDURE. REMOVING THE INDOOR CTROLLER BOARD AND INDOOR POWER BOARD PHOTOS & ILLUSTRATIS Electrical box cover Photo () Remove the front panel. (Refer to ) () Remove the electrical box cover (screw ). (Refer to the Photo ) INDOOR CTROLLER BOARD () Disconnect the following connectors on the indoor controller board. (connector in front of) CN, CNV, CN, CN, CN CN, CN, CNA, CN () Pull out the indoor controller board toward you, then disconnect the rest of connectors. CNM, CNM (See the Photo ) Electrical box Screw INDOOR POWER BOARD () Disconnect the following connectors on the indoor power board. FAN, CNP, CNP, CNM, CND () Remove the earth wire for TAB. () Pull out the indoor power board toward you. (See the Photo ) Photo Coil cover fixing screw Indoor controller board Indoor power board Terminal block (TB) Coil cover Room temperature thermistor cover Terminal block (TB). REMOVING THE ELECTRICAL BOX () Remove the front panel. (Refer to ) () Remove the electrical box cover. (See the Photo ) () Pull the nozzle assembly toward you as opening the catch of the nozzle assembly. (See the Photo ) () Disconnect the indoor/outdoor transmission wiring of TB. () Disconnect the power supply wiring of TB. () Disconnect the relay connector of MA-remote controller. (7) Disconnect the following connector on the indoor controller board. CN, CNV, CN, CN, CN, (CNA) () Disconnect the connector (FAN) on the indoor power board. () Remove the ground wire fixing screw. () Pull the disconnected lead wire out from the electrical box. () Push up the upper fixture catch to remove the box, then pull the lower fixture and remove it from the box fixture. Photo Linear expansion valve Liquid pipe temp. thermistor (TH) Gas pipe temp. thermistor (TH) Indoor controller board Indoor power board MA-remote controller connector Terminal block (TB) Terminal block (TB) Ground wire set screw
OPERATI PROCEDURE. REMOVING THE NOZZLE ASSEMBLY AND DRAIN HOSE () Remove the front panel (Refer to ). () Remove the electrical box cover. () Disconnect the connector (CNV) on the indoor controller board. () After unhook the right side of the corner box, press the upper left side and remove the corner box. () Remove the nozzle assembly from the fixture. (See the Photo ) () Remove the drain hose. PHOTOS & ILLUSTRATIS Photo Heat exchanger Electrical box Drain hose Nozzle assembly fixture Drain hose fixture. REMOVING THE LINE FLOW FAN AND THE FAN MOTOR () Remove the front panel. (Refer to ) () Remove the nozzle assembly. (Refer to ) () Remove the electrical parts box. () Remove the fixture while pressing the right side of motor fixture catch. (See the Photo ) () Remove the left side of the motor fixture. () Loosen the screw which fixes the line flow fan to the fan motor, then remove the fan motor by sliding it to the right side. (See the Photo ) (7) Pull the left-hand side of the heat exchanger toward you. (See the Photo 7) () Remove the line flow fan. Photo Line flow fan set screws Photo 7 Heat exchanger Heat exchanger Fan motor fixture (right) fixture (left) fixture set screws Drain hose Nozzle assembly Heat exchanger fixture (left) 7. REMOVING THE VANE MOTOR () Remove the front panel. () Remove the screw of the electrical parts box cover, and remove the cover. () Remove the screws of the vane motor. Disconnect the relay connector and remove the motor from the shaft. () Disconnect the vane motor connector (CNV) on the indoor controller board. Photo Heat exchanger Vane motor Vane motor fixing screws Nozzle assembly. REMOVING THE LIQUID PIPE THERMISTOR AND GAS PIPE THERMISTOR () Remove the front panel. (Refer to ) () Remove the electrical box cover. () Remove the coil cover. () Cut the wiring fixed band. () Remove the liquid pipe thermistor and gas pipe thermistor. (See the Photo ) () Disconnect the connector (CN) (CN) on the indoor controller board. Photo Heat exchanger Gas pipe thermistor Liquid pipe thermistor Electrical box
TM HEAD ICE : TOKYO BLDG., -7-, MARUNOUCHI, CHIYODA-KU TOKYO -, JAPAN ccopyright 7 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Nov. No. OCH REVISED EDITI-A PDF 7 Distributed in May 7 No. OCH PDF Made in Japan New publication, effective Nov. Specifications subject to change without notice