Mitsubishi PEN-2.5 Service Manual

TECHNICAL & SERVICE MANUALSPLIT-TYPE,AIR CONDITIONERSCONTENTS1. TECHNICAL CHANGES·······························32. COMBINATION OF INDOOR AND OUTD

10ItemService Ref.PK-3FLA2 PK-3FLA3 PK-3FLA4 PK-3FLA5 PK-3FLA2 PK-3FLA3 PK-3FLA4 PK-3FLA5 27/19°C , 35/24°C Cooling (JIS B8616) Munsell 3.4Y

11ItemService Ref.PK-4FLSA2 PK-4FLSA3 PK-4FLSA4 27/19.0°C, 35/24°C Cooling (JIS B8616) w4w533,8009,9005.0837,500 11,000 4.38 33,400 9,800 3.46

122. POWER SUPPLY & MODEL NAMESNotes : 1. Power supply key N……1ph, 220V, 60Hz Y…3ph, 380/220, 400/230,V(L) …1ph, 220, 230 240V, 50Hz 415/240V, 50H

13DATA51. PERFORMANS DATACOOLING CAPACITY50HzService Ref.TemperatureEvaporator airflow (CMM)Bypass factorsS.H.F. at rating conditions130.180.81140.160

14COOLING CAPACITY60HzCOOLING CAPACITY correction factors60HzRefrigerant piping length (one way)Service Ref.5m (16ft)1.01.01.01.010m (33ft)0.9850.9780

15Service Ref.MODEWkWMpa(o/f)Mpa(o/f)˚C˚C˚CmD.B.˚CW.B.˚C D.B.˚CD.B.˚CW.B.˚CCoolingCoolingCoolingCoolingCoolingCoolingCoolingCoolingCoolingPK-3FLA3 PK-

166OUTLINES AND DIMENSIONSPK-1.6FLA3PK-2FLA3PK-2.5FLA2, PK-2.5FLA3PK-3FLA2, PK-3FLA3, PK-3FLA4PK-4FLSA2, PK-4FLSA3PK-2.5FLA4PK-3FLA5PK-4FLSA4TEMPON

17Unit : mmPipe positionLeft sideLequid pipeGas pipeService space requiredaround indoor unit(100 for left-handside piping)Right side130 or less2 tapp

18Unit : mm23545235452354523562.5135842340197TopFrontRight sideLeft side14001090 Air intake235CKnock out hole for right pipingRefrigerant pipe. Drain

19Unit : mm2354523545235452354523562.5135842340197TopFrontRight sideLeft side16801370 Air intake235CKnock out hole for right pipingKnock out hole for

OC129A-1.qxp 01.10.1 7:33 PM Page 2

207WIRING DIAGRAMNOTES:1. Since the indoor fan motor (MF) is connected with 220V power, using 230, 240V power will require a setting change of the d

21NOTES:1. Since the indoor fan motor (MF) is connected with 220V power, using 230, 240V power will require a setting change of the dip switch (SW1&

228REFRIGERANT SYSTEM DIAGRAMINDOOR UNIT PK-2.5 PK-3 PK-4OUTDOOR UNITPU-2.5/3J seriesPU-4J seriesIndoor heatexchangerDistributorFlexible tubeFla

23Indoor heatexchangerDistributorwithstrainerFlexible tubeFlaredconnectionFlaredconnectionRefrigerant pipe [15.88(5/8") (with insulator

249 OPERATION FLOW-CHARTSTARTSTOPEMERGENCYALL STOPCOOL OPERATIONDRY OPERATIONPOWER SUPPLYLiveON/OFFbutton ONAbnormaloperation modeMODE SELECTbuttonPOW

25COOL operation3 min. delay6-minutetime delayCompressor start3 minutes elapseCoil frostprotectionRange CCompressorstart 10 minuteselapseCoil frostpre

26Note8. When room temperature is 18°C or below, the compressor can not turn ON. When the room temperature rises to 18°C or above, the compressor wi

27MICROPROCESSOR CONTROL10TEMP ON / OFFNOT AVAILABLEAMPMAMPM˚C1. OUTLINE OF MICROPROCESSOR CONTROL● OFF-ON switching.● COOL • DRY • FAN selector switc

282. INDOOR UNIT CONTROL2-1COOL operationThermostatOperation starts byPOWER buttonON.ONOFFIndoor fanONOFFAuto vaneONOFFCompressorONOFF w1 Even if the

295 Coil frost protectionWhen the indoor coil temperature becomes - 15°C or below, coil frost protection will proceed as follows.<Start condition&g

3TECHNICAL CHANGES13PART NAMES AND FUNCTIONS● Indoor UnitAir intakeRoom air is suctionedin here.(Removes dust and dirt from the intake air.)Disperses

302-2 DRY operationThermostatOperation starts byPOWER buttonON.ONOFFIndoor fanONOFFAuto vaneONOFFCompressorONOFFw2 Even if the room temperature rises

31(2) Indoor fan controlThe indoor fan runs on LOW speed during compressor operation. The fan speed cannot be changed with the remote con-troller.Also

Test run Measure an impedance between the power supply terminal block and groundwith a 500V Megger and check that it is equal to or greater than 1.0M&

332-6 Emergency operationWhen the remote controller or microprocessor malfunctions and no other trouble exists, emergency operation is availableby set

342 SW2 (Unit switch)SW2-1) Switch for air conditioner with or without electric heater ON:Unit with electric heaterOFF:Unit without electric heaterSW

35Switches are located on the indoor unit PC board and inside the remote controller as shown.• Setting the SW1 (PC board inside indoor unit)Sub-switch

3611TROUBLESHOOTING(1) Turn on the main power of the unit.(2) Set the adjusting switch on the back ofthe wireless remote controller to “Set”CHECK and

37ON/OFFTEMPFANVANEMODECHECKLOUVERTEST RUN AUTO STOP AUTO STARThminRESETSETCLOCK4321. Self-diagnostic function 1 Turn on the main power to the

383. How to check the parts PK-1.6FLA3, PK-2FLA3, PK-2.5FLA2/3/4, PK-3FLA2/3/4/5, PK-4FLSA2/3/4Room temperaturethermistor (RT1)Pipe temperatur

39DISASSEMBLY PROCEDURE12OPERATING PROCEDURE PHOTOS&ILLUSTRATIONMetal fixtureScrews1. Removing the lower side of the indoor unit from the instal-l

4TEMP ON / OFFNOT AVAILABLEAMPMAMPM˚CMODEFANVANE STOPSTARTCLOCKHR MIN.ON / OFFdisplayOPERATION MODE displayOperation mode display indicates which oper

40OPERATING PROCEDURE PHOTOS&ILLUSTRATION(9) Remove the screws of the indoor controller board case,and pull out the indoor controller board case.

41OPERATING PROCEDURE PHOTOS8. Removing the lineflow fan and the fan motor(1) Remove the left and right side panels. (2) Remove the grills. (3) Remove

4213PARTS LISTNo.Part No.Part nameSpecificationUnitAmountRemarks.(Drawing No.)WiringDiagramSymbolRecom-mendedQ'tyQ'ty/setPK-1.6,PK-2Price123

43No.Part No.Part nameSpecificationUnitAmountRemarks.(Drawing No.)WiringDiagramSymbolRecom-mendedQ'tyQ'ty/setPrice123456789101112LEFT SIDE P

44No.Part No.Part nameSpecificationUnitAmountRemarks.(Drawing No.)WiringDiagramSymbolRecom-mendedQ'tyQ'ty/setPrice123456789101112LEFT SIDE P

45No.Part No.Part nameSpecificationUnitAmountRemarks.(Drawing No.)WiringDiagramSymbolRecom-mendedQ'tyQ'ty/setPrice12345678910111213LEFT SIDE

46ELECTRICAL PARTSPK-1.6FLA, PK-1.6FLA1, PK-1.6FLA2, PK-1.6FLA3PK-2FLA, PK-2FLA1, PK-2FLA2, PK-2FLA31015213456731328911121314302916171819 20 212223

47No.Part No.Part nameSpecificationUnitAmountRemarks.(Drawing No.)WiringDiagramSymbolRecom-mendedQ'tyQ'ty/setPK-1.6 PK-2Price123456789101112

632323536373823222120191817161514131112343157891012272425282630293334PK-2.5FLAPK-2.5FLA1PK-2.5FLA2PK-2.5FLA3PK-2.5FLA448No.Part No.Part nameSpecificat

49No.Part No.Part nameSpecificationUnitAmountRemarks.(Drawing No.)WiringDiagramSymbolRecom-mendedQ'tyPrice910111213141516171819202122232425262728

5●Wireless remote controller● When cover is open.ON/OFF TEMPFANVANETEST RUNAUTO STOPAUTO STARThminLOUVERMODECHECKRESETSET CLOCKMODEL SELECTNOT AVAIL

632323536373823222120191817161514131112343157891012272425282630293334PK-3FLAPK-3FLA1PK-3FLA2PK-3FLA3PK-3FLA4PK-3FLA550No.Part No.Part nameSpecificatio

51No.Part No.Part nameSpecificationUnitAmountRemarks.(Drawing No.)WiringDiagramSymbolRecom-mendedQ'tyPrice910111213141516171819202122232425262728

632323536373823222120191817161514131112343157891012272425282630293334PK-4FLSAPK-4FLSA1PK-4FLSA2PK-4FLSA3PK-4FLSA452No.Part No.Part nameSpecificationUn

53No.Part No.Part nameSpecificationUnitAmountRemarks.(Drawing No.)WiringDiagramSymbolRecom-mendedQ'tyPrice910111213141516171819202122232425262728

5414OPTIONAL PARTSORN 123BRNRED2. TIMER ADAPTERThis adapter is needed for system control and for operation via external contacts.Part No. PAC-SA89TA-E

55BACKACTIVEBYPASSPOWERON/OFFDUALCENTRALAHEADMITSUBISHI ELECTRICENGAGEDGROUPACTIVE BYPASSGROUPSELECTIONPROGRAMTIMERCONTROLLEROPERATIONDUAL CENTRAL1234

563. Be sure to set the maximum address number with thedip switch SW17 on the centralized remote controller.ANET(Y)(W) (R) (O)(BR)5AAPOWERSUPPLYNEFuse

575. PROGRAM TIMER ADAPTERThis adapter is needed when a program timer(PAC-815PT)or a centralized remote controller(PAC-805RC)is used.5-2 Connection me

58Fig.4Fig.3To program timer or centralized remote controllerAdaptor200 240V ACCN30CN2 CN51CN50Indoor unitMax. Length of each cable is 10m.3-core

59CentraizedRemotecontroller2-wire cable6-wire cableTo indoor unitConnector CN1 Connector CN1Programtimer6-3. How to connect program timer (PAC-SK65PT

64 SPECIFICATIONSItemService Ref.PK-1.6FLA3 PK-2FLA3PK-2FLA3PU-2VJA2Single, 50Hz, 220/240V2.44 / 2.4811.3 / 10.8(98/96)48 / 52PU-2NJA1 Single, 60Hz, 2

© Copyright 1997 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD.Distributed in Sep.2001. No. OC129 REVISED EDITION-A 870Reprinted in May.2001. No. OC129 5Is

7w4w522,7006,6503.543.4415.8(99)5827/19.0°C, 35/24°C Cooling (JIS B8616) PK-2.5FLA2 PK-2.5FLA3 PK-2.5FLA4PK-2.5FLA2 PK-2.5FLA3 PK-2.5FLA4Munse

8ItemService Ref.PK-3FLA2PK-3FLA227/19.0°C, 35/24°C Cooling (JIS B8616) Munsell 3.4Y 7.7/0.8(White) Plate fin coil Line flow (direct) o 2 0

9ItemService Ref.PK-3FLA3 PK-3FLA4 PK-3FLA5 PK-3FLA3 PK-3FLA4 PK-3FLA5 27/19°C , 35/24°C Cooling (JIS B8616) Munsell 3.4Y 7.7/0.8(White) Pl