Mitsubishi Mr.Slim PKH-FAK Service Manual

This manual does not cover thefollowing outdoor units. When ser-vicing them, please refer to theservice manual No.OC150 andthis manual i

10Outdoor intake air °C DB35 40 45IndoorIntake air°C DBIndoorIntake air°C WB2020202222222424242426262626272727272828282830

11Outdoor intake air °C DB20 25 30IndoorIntake air°C DBIndoorIntake air°C WB2020202222222424242426262626272727272828282830

12Outdoor intake air °C DB35 40 45IndoorIntake air°C DBIndoorIntake air°C WB2020202222222424242426262626272727272828282830

13Outdoor intake air °C DB20 25 30IndoorIntake air°C DBIndoorIntake air°C WB2020202222222424242426262626272727272828282830

14Outdoor intake air °C DB35 40 45IndoorIntake air°C DBIndoorIntake air°C WB2020202222222424242426262626272727272828282830

15Outdoor intake air °C DB20 25 30IndoorIntake air°C DBIndoorIntake air°C WB2020202222222424242426262626272727272828282830

16Outdoor intake air °C DB35 40 45IndoorIntake air°C DBIndoorIntake air°C WB2020202222222424242426262626272727272828282830

17Outdoor intake air °C DB20 25 30IndoorIntake air°C DBIndoorIntake air°C WB2020202222222424242426262626272727272828282830

18Outdoor intake air °C DB35 40 45IndoorIntake air°C DBIndoorIntake air°C WB2020202222222424242426262626272727272828282830

19Service Ref.PKH-1.6FKA-ERefrigerant piping length(one way)5m 10m 15m 20m 25m 30m 35m 40m 45m 50mPKH-2FKA-EPKH-2.5FKA-EPKH-3FKA-EPKH-4FKSA-E1.001.00

21 PART NAMES AND FUNCTIONS● Indoor UnitAir intakeroom air is suctionedin here.(Removes dust and dirt from the intake air.)Disperses airflow up anddow

20Service Ref.Indoor unitOutdoor unitPKH-1.6FKA-EPUH-1.6VKA3.UKCool4,4001.430.070.320.401.366.7930Cool5,4002.190.070.320.402.129.8343H

21Service Ref.PKH-1.6FKA-ECooling HeatingModeCapacity WInputIndoor unit Service Ref.Phase,HzVoltsAmperesOutdoor unit Service Ref.Phase,HzVoltsAmperesD

2290807060504030201063 125 250 500 1000 2000 4000 8000APPROTIMATETERESHOLD OFREARING FORCONTINUOUSNOISENC-60NC-50NC-40NC-30NC-20NC-70OCTAVE BAND S

234OUTLINES AND DIMENSIONSUnit : mm1. INDOOR UNITPKH-1.6FKA-EPKH-2FKA-EPipe positionLeft sideLequid pipeGas pipeService space requiredaround indoor un

2423545235452354523562.5135842340197TopFrontRight sideLeft side14001090 Air intake235CKnock out hole for right pipingRefrigerant pipe. Drain pipeKnoc

25Unit : mmPKH-4FKSA-E2354523545235452354523562.5135842340197TopFrontRight sideLeft side16801370 Air intake235CKnock out hole for right pipingKnock ou

26Unit : mm18130Rear side wiring arrangement opening.120FILTERCHECK MODETEST RUNFILTERCHECK MODETEST RUN4683.5SW18SW17REMOTE CONTROLLERPAR-JH241KACAUT

275WIRING DIAGRAMCN2OFFON4321SW18TB6A01 B02OFFONR.B45231CN132187654321SW17LED1 12VPOWERLED2 5VPOWERSW7SW2123456101234SW521CN2LLOSSNAY31LSMV3ONOFFTRANS

28NOTES:1. Since the indoor fan motor (MF) is connected with 230, 240V power, using 220V power will require a setting change of the dip switch (SW7<

296REFRIGERANT SYSTEM DIAGRAMIndoor heat exchangerIndoor unitRefrigerant pipe(option)15.88mm( 5/8")(with heat insulator)Refrigerant pipe(op

3Caution● Only the display lights when the unit is stopped and power supplied to the unit.● When power is turned ON for the first time the (CENTRA

307OPERATION FLOW-CHARTSTARTPower circuitbreakerCheck SWON twiceOperation SWON“OFF” timer“ON” timerSTOPSet timecompleteSet timecomplete1NONONO NONONON

31COOL operationFour-way valve/OFFInitial COOLINGNONONONONONOYESYESYESYESYESNOYESYESYESYESYESYESYESYESYESYESYESNONONONOYESNONONONONONONONONOw8w9Va

32Heat operationInitial HEATINGVane setting notchVane initial settingDefrostingHeating areaDefrost releaseDefrost 30 min. elapseOutdoor un

33w 8 ~ 9 Refer to page 31.w 12 When room temperature is 18°C or below, the compressor cannot operate.When room temperature rises over 18°C, the compr

348MICROPROCESSOR CONTROL● Compressor andoutdoor fan : ON-OFF● Operation modechange :COOL-HEAT.1. OUTLINE OF MICROPROCESSOR CON-● OFF-ON switching.● C

35<How to operate>1 Press POWER ON/OFF button.2 Press the a button to display “ f ”.3 Press the i TEMP. button to set the desired temperature.NO

36(2) Indoor fan controlIndoor fan speed LOW/HIGH depends on the remote controller setting.However, if an outdoor unit abnormality is detected, the in

37(3) Auto vane controlAuto vane position is set to 10 degrees airflow at the start-up of COOL operation. It can then be changed by the remotecontroll

38<Auto vane drive> (PKH-1.6FKA-E / PKH-2FKA-E)(a) The auto vane is driven by a 2.5 rpm motor.(b) Vane motor drive time(c) Airflow direction is

39(5) Drain pump control (Option : Only PKH-2.5FKA-E / PKH-3FKA-E / PKH-4FKSA-E)The drain pump works in COOL or DRY operation. When operation stops o

42SPECIFICATIONSItemFunctionCapacityTotal inputService Ref.Power supply(phase,cycle,voltage)InputRunning currentStarting currentExternal finishHeat e

40(1) Compressor control13-minute time delayTo prevent overload, the compressor will not start within 3 minutes after stop. 2The compressor runs when

41Minimum 3 minutes w2ONThermostatIndoor fanAuto vaneCompressorPower ON lampSTAND BY lampONON(PKH-2.5/3/4 for J1-7,J1-8)LOW or HIGHLOW o

(2) Indoor fan control(a) Normal control(!)The indoor fan runs on EXTRA-LOW speed during the thermostat OFF.EXTRA-LOW speed can be changed to LOW or H

43(4) Detecting abnormalities in the outdoor unitWhen the outdoor unit is determined to be abnormal by the following causes, the compressor will stop

44(1) Initial mode1 When AUTO operation starts after unit OFF.● If the room temperature is higher than the set temperature, operation starts in COOL m

45<How to operate>To change the airflow direction, press button.(1) COOL/DRY operationAt the start-up of COOL or DRY operation, the airflow dir

46<Timer function>AUTO STOP ·········The air conditioner stops after the set time lapses.AUTO START ········The air conditioner starts after the

47(1) Indoor coil temperature codeDuring the test run, the indoor coil temperature code from 1 to 15 is displayed on the remote controller instead of

482-9 Interlock with ventilation system (LOSSNAY)Mr. SLIM/LOSSNAY interlock operation is available by using the optional parts listed below.(1) System

109492-10 Dip switch and jumper connector functionsEach figure shows the initial factory setting.[1] On remote controller board(1) SW17(Address select

5ItemFunctionCapacityTotal inputService Ref.Power supply(phase,cycle,voltage) Input Running current Starting currentExternal finishHeat exchan

50(2) SW2 (Address selector)(3) SW3 (Emergency operation switch)(4) SW5 (Model selector)(5) SW6 (Model selector)(6) SW7 (Model selector)Switch to set

51J1-6) Switch for set temperature adjustment in HEAT modeDuring HEAT operation, warm air collects near the ceiling. When the indoor unit is installe

523. OUTDOOR UNIT CONTROL3-1 Outdoor fan controlThe rotational frequency of outdoor fan is phase-controlled according to the outdoor coil temperature.

53(1) Start conditions A. When all of the following conditions are satisfied, defrosting will start. However, when the bypass valve turns OFF,defrosti

54(3) Defrost intervalThe defrost interval time is determined as follows.● Initial defrost interval is 50 minutes.● The defrost interval after defrost

553-7 Service functions(1) Compulsory defrosting1When all of the following conditions are satisfied, pressing SW2 starts the compulsory defrosting.● D

569 TROUBLESHOOTINGSymptom Cause Check pointsThe display “CENTRALLYCONTROLLED” on remotecontroller dose not disap-pear.1) Wrong address setting of rem

572. SELF DIAGNOSTIC FUNCTION WITH REMOTE CONTROLLER2-1 When malfunction occurs during operationWhen a malfunction occurs, the indoor and outdoor unit

58CheckcodeDiagnosis of malfunction Cause Check pointsEOSignal transmitting/receivingerror(Indoor controller does notrespond to remote controllersigna

593. SERVICE DATA INDICATION BY SWITCHES ON OUTDOOR CONTROLLER BOARDSetting dip switches SW2 and SW3 on the outdoor controller board enables LED to sh

6ItemFunctionCapacityTotal inputService Ref.Power supply(phase,cycle,voltage) Input Running current Starting currentExternal finishHeat exchan

603-1 Outdoor coil temperatureTo obtain data on the outdoor coil temperature, add the number of bits of lighting LED, and see the graph below to find

61BlinkingLEDDiagnosis of malfunction Cause Check pointLD1Reversed phase Phases L1, L2, and L3are con-nected improperly.Check the power supply connect

626. WRONG WIRING ON SITE6-1 Between remote controller and indoor unitIf the wire is disconnected between the remote controller and the indoor unit, n

63Vanes do not work.Vane motor does not work.Limit switch does not work.Connector is poorly connected.Vane motor is poorly assembled.Indoor controller

64SymptomLOSSNAY control switch does not work.LOSSNAY air speed can not be controlled in interlock opera-tion.LOSSNAY control switch can not work duri

6510 SYSTEM CONTROL1 Group control witha single remotecontroller(See page 66.)UnitRemotecontrollerUnit UnitMany units, installed at different locatio

662. GROUP CONTROL WITH A SINGLE REMOTE CONTROLLERA maximum of 50 units can be started in order according to the dip switch settings 2-1 How to wire(1

673. REMOTE ON-OFF AND INDIVIDUAL REMOTE CONTROLSThis method is available to control one unit or any number of units.The following operations are ava

68w1 After all units start together, if SW2 is turned OFF, each unit can be individually stopped by each remote controller. w2 After all units stop to

695. MULTIPLE REMOTE CONTROL DISPLAYYou can control several units with a multiple remote control display,bywiring an optional multiple display adapter

7ItemFunctionCapacityTotal inputService Ref.Power supply(phase,cycle,voltage) Input Running current Starting currentExternal finishHeat exchan

7011 DISASSEMBLY PROCEDUREOPERATING PROCEDURE PHOTOS&ILLUSTRATIONMetal fixtureScrews1. Removing the lower side of the indoor unit from the instal-

71OPERATING PROCEDURE PHOTOS&ILLUSTRATION(9) Remove the screws of the indoor controller board case,and pull out the indoor controller board case.

72OPERATING PROCEDURE PHOTOS8. Removing the lineflow fan and the fan motor(1) Remove the left and right side panels. (2) Remove the grills. (3) Remove

7312 PARTS LISTSTRUCTURAL PARTSPKH-1.6FKA-EPKH-2FKA-E19932410567833Part No.SpecificationNo.WiringDiagramSymbolRecom-mendedQ,tyPriceUnitAmountRemarks(D

Part No.SpecificationNo.WiringDiagramSymbolRecom-mendedQ,tyPriceUnitAmountRemarks(Drawing No.)Q,ty/setPKH-1.6 PKH-2FKA-E FKA-ET7W 570 762R01 KV5 114R0

75Part No.SpecificationNo.PriceRemarks(Drawing No.)Q,ty/setPKH-1.6 PKH-2FKA-E FKA-ET7W 512 716T7W 517 716R01 588 255R01 J07 202T7W 53J 799T7W 53J 480T

76ELECTRICAL PARTSPKH-2.5FKA-EPKH-3FKA-EPKH-4FKSA-E51331107211832203335282730 23 241715 362969138 37·3816212114221416192526Part No.SpecificationNo.Wir

77Part No.No.PriceRemarks(Drawing No.)Q,ty/setPKH-2.5PKH-3 PKH-4FKA-E FKA-E FKSA-ER01 Z61 102R01 KV5 102——R01 12G 529R01 16G 529R01 12G 223———R01 12G

78Part number that are circled are not shown in the figure.Part No.No.PriceRemarks(Drawing No.)R01 12G 661R01 12G 662R01 12G 691R01 16G 692R01 A17 500

7913 OPTIONAL PARTS2-2 Feature of program timer(1) Daily timer functionDaily timer can be set in 30 minutes units for up to 24 hours.Each unit can be

8ItemFunctionCapacityTotal inputService Ref.Power supply(phase,cycle,voltage) Input Running current Starting currentExternal finishHeat exchan

802-3. How to connect program timer(1) Install the program timer next to the remote controller the same way as the remote controller is installed.(2)

8112345BRNREDORNYLWGRNBACKACTIVEBYPASSPOWERON/OFFDUALCENTRALAHEADMITSUBISHI ELECTRICENGAGEDGROUPACTIVE BYPASSGROUPSELECTIONPROGRAMTIMERCONTROLLERO

82BACKACTIVEBYPASSPOWERON/OFFDUALCENTRALAHEADENGAGEDGROUPACTIVE BYPASSGROUPSELECTIONPROGRAMTIMERCONTROLLEROPERATIONDUAL CENTRAL1234567891010 9

836. PROGRAM TIMER ADAPTERThis adapter is needed when a program timer(PAC-SC32PTA)or a centralized remote controller(PAC-805RC)is used.6-1 Parts inclu

7. DRAIN PUMP (Only for PKH-2.5FKA-E / PKH-3FKA-E / PKH-4FKSA-E). HEAD OFFICE MITSUBISHI DENKI BLDG.MARUNOUCHI TOKYO100-8310 TELEX J24532 CABLE MELCO

93DATA1. PERFORMANCE DATA1) COOLING CAPACITY<1>PKH-1.6FKA-EOutdoor intake air °C DB20 25 30IndoorIntake air°C DBIndoorIntake air°C WB20202022222