Mitsubishi Mr.Slim PKA-A.HA4 Wartungshandbuch

SERVICE MANUALSPLIT-TYPE, HEAT PUMP AIR CONDITIONERSSPLIT-TYPE, AIR CONDITIONERSNOTE:• This manual describes only service data of the indoor units.• R

10WIRING DIAGRAM7PKA-A12HA4 PKA-A18HA4The black square ( )indicatesa switch position.Notes:1. SymboIs used in wiring diagram above are, :

11REFRIGERANT SYSTEM DIAGRAM8Thermistor TH2Pipe temperature(Liquid)Distributorwith strainer (#50/#50)Thermistor TH5(Cond./ Eva.temperature)Thermistor

12TROUBLESHOOTING9<Error code display by self-diagnosis and actions to be taken for service (summary)>Present and past error codes are logged an

1313[Procedure]1. Press the CHECK button twice.2. Press the temperaturebuttons.3. Point the remote controller at thesensor on the indoor unit andpress

14[Output pattern A] Errors detected by indoor unit[Output pattern B]E9*1 If the beeper does not sound again after the initial2 beeps to confirm the s

15•If the unit cannot be operated properly after the test run, refer to the following table to find out the cause.SymptomCauseWired remote controller

169-3. SELF-DIAGNOSIS ACTION TABLENote: Refer to the manual of outdoor unit for the details of display such as F, U, and other E.Error CodeAbn

17Error CodeAbnormal point and detection methodCauseCountermeasureP6Freezing/overheating protection isoperatingFreezing protection (Cooling mode)The u

18Error CodeAbnormal point and detection methodCauseCountermeasureP9Pipe temperature thermistor/Condenser-Evaporator (TH5)The unit is in 3-minute resu

19E6Contact failure, short circuit or,miswiring (converse wiring) ofindoor/outdoor unit connectingwireDefective transmitting receivingcircuit of outdo

21REFERENCE MANUAL1-1. OUTDOOR UNIT SERVICE MANUALService Ref. Service Manual No.PUZ-A18/24/36NHA4PUZ-A18/24/36NHA4-BSPUY-A12/18/24/36NHA4PUY-A12/18/2

20Note: Refer to the manual of outdoor unit for the detail of remote controller.(1)Upward/downward vane performance failureThe vane is not do

219-5. EMERGENCY OPERATION 9-5-1. When IR wireless remote controller fails or its battery is exhausted 9-5-2. When wired remote controller or indoor

229-6. HOW TO CHECK THE PARTSParts name Check pointsVane motor (MV)Measure the resistance between the terminals with a tester. (Coil temperature 77&qu

239-6-2. DC Fan motor (fan motor/indoor controller circuit board)Notes · High voltage is applied to the connecter (CNMF) for the fan motor. Pay attent

249-7. TEST POINT DIAGRAMIndoor controller boardPKA-A12HA4 PKA-A18HA4{CN51Centrally control1-2 : Control signal13VDC pulse input (1: +)3-4 : Operat

25SW1Setting by the dip switch and jumper wireFunctionsJumper wireModelsettingsCapacitysettingsPair numbersetting withIR wireless remotecontrollerRema

2610SPECIAL FUNCTIONNote:· When the uint is restarted to operate after turning off the power or OFF operation, the unit which was operating will start

2727 System constraint· This function is available only in cooling mode.Ex.) Set temp. by R/C = 20:(68°F)Set point = 26:(79°F)When request code number

28(2) Setting method of each function by wired remote controllerB: Refrigerant addressC: Data display areaD: Request code display areaTESTCHECKFILTER

29DISASSEMBLY PROCEDURE11Be careful when removing heavy parts.PushPushDownBe carefulnot to damage the airflow adjustmentplate with thescrew driver.Cor

3SAFETY PRECAUTION2Cautions for units utilising refrigerant R410A2-2. CAUTIONS RELATED TO NEW REFRIGERANTUse new refrigerant pipes.Store the piping to

304. REMOVING THE ELECTRICAL BOX(1) Remove the front panel. (Refer to step 2)(2) Remove the electrical box covers. (See Photo 3)(3) Remove the nozzle

315. REMOVING THE NOZZLE ASSEMBLY (with VANE and VANE MOTOR) AND DRAIN HOSE(1) Remove the front panel (Refer to step 2).(2) Remove the electrical box

328. REMOVING THE LIQUID PIPE THERMISTOR AND COND/EVA TEMP. THERMISTOR(1) Remove the front panel. (Refer to step 2)(2) Remove the electrical box cov

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HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPANCCopyright 2010 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.Distributed in

4GravimeterUnit[3] Service tools Use the below service tools as exclusive tools for R410A refrigerant.3PART NAMES AND FUNCTIONS Indoor unitFilterAir

5● Wired remote controller (Option)°F°C°F°CERROR CODEAFTERTIMERTIME SUN MON TUE WED THU FRI SATONOFFHrAFTERFILTERFUNCTIONONLY1Hr.WEEKLYSIMPLEAUTO OFFP

6● IR wireless remote controller (Option)ON/OFF TEMPFANVANETEST RUNAUTO STOPAUTO STARThminLOUVERMODECHECKRESETSET CLOCKMODELSELECTNOT AVAILABLESWINGCH

7SPECIFICATIONS4AAkWF.L.Am3/min(CFM)Pa(mmAq)dBmm(in.)mm(in.)mm(in.)mm(in.)kg(lbs)Service Ref.Power supply(phase, cycle, voltage)Max. Fuse SizeMin.Circ

85NOISE CRITERION CURVES90807060504030201063 125 250 500 1000 2000 4000 8000APPROXIMATETHRESHOLD OFHEARING FORCONTINUOUSNOISENC-60NC-50NC-40NC-30NC-20

9OUTLINES AND DIMENSIONS6PKA-A12HA4 PKA-A18HA4 Unit: inch (mm)1/2F (:12.7)1/4F (:6.35)RefrigerantPipingDrain hoseGas pipeLiquid pipe:2-1/2~:3-1/8