Mitsubishi PLH-2 Wartungshandbuch

TECHNICAL & SERVICE MANUALSPLIT-TYPE, HEAT PUMP, AIR CONDITIONERSIndoor unit[Model names]PLH-1.6KKHBPLH-2KKHBPLH-2.5KKHB[Service Ref.]PLH-1.6KKHB·

102) HEATING CAPACITYNote CA:Capacity (W)P.C.:Power consumption (kW)Heating capacity correction factorsPLH-1.6KKHB.UKPLH-2KKHB.UKPLH-2.5KKHB.UKIndoori

11Input (kW)Current (A)Starting current (A)Input (kW)Current (A)Starting current (A)ModeCapacity (W)Total Input (kW)PUH-1.6VKA3.UK PUH-2VKA2.UK PUH-2.

12ModeTotalElectrical circuitRefrigerant circuitIndoor sideOutdoorsideCapacityInputIndoor unit Service Ref.Phase,HzVoltsAmperesOutdoor unit Service Re

13OUTLINES AND DIMENSIONS5Unit : mmCeiling holeSuspension bolt pitchSuspension bolt M10 orAir intake holeAir outlet holeAir intake grill690~710 25~352

14Unit : mm (inch)2. REMOTE CONTROLLER18130Rear side wiring arrangement opening.120FILTERCHECK MODETEST RUNFILTERCHECK MODETEST RUN4683.5SW18SW17CAUTI

15WIRING DIAGRAM6NOTES :1. Since the indoor transformer (T)is connected with 240Vpower. If 220, 230v power is used. change the wiring connection show

167REFRIGERANT SYSTEM DIAGRAMServiceportCapillarytubeIndoor heat exchangerIndoor coilthermistor(RT2)Distributorwith strainerPLH-1.6 (O.D.3.2 ✕ I.D.1.

17OPERATION FLOW-CHART8STARTPower circuitbreakerCheck SWON twiceOperation SWON“OFF” timer“ON” timerSTOPSet timecompleteSet timecomplete1NONONO NONONON

18COOL operationFour-way valve/OFFInitialCOOLINGNONONONONONOYESw8YESYESYESYESYESNOYESYESYESYESYESYESYESYESYESYESYESNONONONOYESNONONONONONONONONOVane i

19Heat operationInitialHEATINGVane setting notchVane initial settingDefrostingHeating areaDefrost releaseDefrost30 min. elapseOutdoor unit troubleFour

21 FEATURES1.PURSUING CONPACTNESS(1)Panel size and body volume reduced to 64% of previous modelsThe width and depth of the panel have been reduced by

20w8—9 Refer to page 26~27.w12 When room temperature is 18°C or below, the compressor cannot operate.When room temperature rises over 18°C, the compre

21MICROPROCESSOR CONTROL9● Compressor andoutdoor fan : ON-OFF● Operation modechange :COOL-HEAT.1.OUTLINE OF MICROPROCESSOR CONTROL● OFF-ON switching.●

222. INDOOR UNIT CONTROL2-1COOL operation(1) Compressor control1 3-minute time delayTo prevent overload, the compressor will not start within 3 minute

235 Coil frost protectionWhen indoor coil temperatuer becomes -15°C or below,coil frost protection will proceed as follows.<Start condition>Afte

24(3) Auto vane controlAuto vane position is set to 35degrees airflow at the start-up of COOL operation. It can then be changed by the remotecontrolle

25<Auto vane drive> (a) The auto vane is driven by a 2.5 rpm motor.(b) Airflow direction can be selected between the No.1 and No.2 setting. (Ini

26<DRY operation time chart>Minimum 3 minutes w1ON30ThermostatIndoor fanAuto vaneDrain pumpBooster heaterCompressorONONLOW speedInitally 30 d

Dry modeEXTRA-LOW speedLOW speedFan operationIndoor coil temperatureBelow -10°C-10 to 0°CAbove 0°C274The compressor will not start when the room tempe

282-3 HEAT operationDepends on remotecontroller settingDepends on remotecontroller settingHorizontal HorizontalMinimum 3 minutes w 2ONThermostatInd

29(1) Compressor control13-minute time delayTo prevent overload, the compressor will not start within 3 minutes after stop.2The compressor runs when t

36.COMPACT DIMENSIONS MEAN EASY INSTALLATION(1)Carefree suspension work with lightweight unit The new unit weighs in at 20kg (9kg lighter than the pre

30Indoor coil temperatureminus room temperature+50-5RANGE ARANGE BRANGE C(degree)Fig.1(4) Booster heater controlWhen the room temperature is 3 degrees

312-4 AUTO operation (Automatic COOL/HEAT change over operation)(1) Initial mode1 When AUTO operation starts after unit OFF.● If the room temperature

32<How to operate>To change the air flow direction, press button.NOTE: Airfiow direction can be set by the indoor dipswitch SW5-1.(1) COOL/DRY

33FILTERCHECK MODETEST RUN240KA<Timer function>AUTO STOP ·········The air conditioner stops after the set time lapses.AUTO START ········The air

34(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

352-9 Interlock with ventilation system (LOSSNAY)Mr. SLIM/LOSSNAY interlock operation is available by using the optional parts listed below.(1) System

362-10 Dip switch functionsEach figure shows the initial factory setting.1 On remote controller board(1) SW17(Address selector)SW17-1~6) For address s

37(3) SW3 (Emergency operation switch)1 2Normal operationONOFF1 2For emergency coolingONOFF1 2For emergency heatingONOFF(4) SW5 (Model selector)(2) SW

38PLH-1.6KKHB·UKPLH-2KKHB·UKPLH-2.5KKHB·UKVoltage[V]220230240220230240220230240100% rotational frequency (rpm)50Hz586608629586608629611634657Service R

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

4● Remote controller● Operation buttonsOnce the controls are set, the same operation mode can be repeatedby simply pressing the ON/OFF button. FILTER

40(1) Start conditions A. When all of the following conditions are satisfied, defrosting will start. However, when the bypass valve turns OFF,defrosti

41(3) Defrost intervalThe defrost interval time is determined as follows.● Initial defrost interval is 50 minutes.● The defrost interval after defrost

423-7 Service functions(1) Compulsory defrositng1When all of the following conditions are satisfied, pressing SW2 starts the compulsory defrosting.● D

43TROUBLESHOOTING10Symptom Cause Check pointsThe display “CENTRALLYCONTROLLED” on remotecontroller dose not disappear.1) Wrong address setting of remo

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

45CheckcodeDiagnosis of malfunction Cause Check pointsEO Signal transmitting/receivingerror(Indoor controller does notrespond to remote controllersign

463.SERVICE DATA INDICATION BY SWITCHES ON OUTDOOR CONTROLLER BOARDSetting dip switchs SW2 and SW3 on the outdoor controller board enables LED to show

473-1 Outdoor coil temperatureTo obtain data on the outdoor coil temperature, add the number of bits of lighting LEDs, and see the graph below to find

48BlinkingLEDDiagnosis of malfunction Cause Check pointLD1 Reversed phase Phases A1, A2, and A3are con-nected improperly.Check the power supply connec

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

5Caution● 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

50LOSSNAY control switch does not work.LOSSNAY control switch can not work during interlock opera-tion.LOSSNAY control switch is effective only while

514-WAY AIR FLOW SYSTEM111.Placement of the air outlets●For this grill, the air flow direction comes in 5 patterns.Also, by setting the dipswitches (S

5212SYSTEM CONTROL1 Group control witha single remotecontroller(See page 53.)UnitRemotecontrollerUnit UnitMany units, installed at different locations

532. 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

54NOTE1 : Install the relay box where you can be serviced it easily.NOTE2 : For control circuit wiring, use a wire of No. 14 AWG or a control cable ac

554. INDIVIDUAL CONTROL BY GROUPING THE REMOTE CONTROLLERS ● Grouping the remote controllers allows individual control and cen-tralized monitoring of

566. AUTO RESTART FUNCTIONBy setting the dipswitch SW1-10 to ON, the air conditioner can bestarted/stopped by power supply ON/OFF.If the air condition

57DISASSEMBLY PROCEDURE13OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS1. Removing the air intake grill(1) Press the button.(2) Open the intake grill 9

58OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS5. Removing the room temperature thermistor(1) Remove the fan guard.(2) Remove the electrical box cover

59OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS9. Removing the drain pump and drain sensor(1) Remove the panel.(2) Remove the fan guard.(3) Remove the

63SPECIFICATIONSService Ref.ItemFunctionCapacityBtu/hWTotal input kWkWINDOOR UNITService Ref.Power supply(phase, cycle,voltage)InputARunning currentAS

6014PARTS LIST1234567T7W 560 003R01 29H 500R01 29H 691R01 29H 061—T7W 14K 200T7W 556 305AIR OUTLET GRILLEAIR FILTERINTAKE GRILLEHINGEGRILLE HANGERREMO

6112345678910R01 29H 002R01 29H 085R01 29H 223R01 29H 063T7W 33K 063R01 29H 056R01 29H 047T7W 560 258R01 29H 040R01 29H 041AUTO VANEAIR GUIDEVANE MOTO

62FUNCTIONAL PARTSPLH-1.6KKHB·UKPLH-2KKHB·UKPLH-2.5KKHB·UK37111213212223202432343336313530292823181716271525261914109854327631239

63123456789101112131415161718192021222324252627282930313233343536373839———T7W E00 762R01 29H 105—R01 41N 114S70 A00 300S70 A01 300R01 32K 706R01 046 7

6415OPTIONAL PARTSNote 1. How to connect refrigerant pipes.Factory supplied optional refrigerant pipings contain refrigerant at the above atmospheric

65SET/MONITORSETSMTWT F SMONITORPROERAN TIMERPAC-SC32PTATODAYONWEEKLYSETTINGOFFONSET BACKOFFCLOCK DAILY TIMERSET BACKSET BACKDAILYSETTING12 15 18

6612345BRNREDORNYLWGRNBACKACTIVEBYPASSPOWERON/OFFDUALCENTRALAHEADMITSUBISHI ELECTRICENGAGEDGROUPACTIVE BYPASSGROUPSELECTIONPROGRAMTIMERCONTROLLEROPERA

67ANET(Y)(W) (R) (O)(BR)5AAPOWERSUPPLYNEFuse(5A)Tie-wrapWiring has to be changed when a 200,230 or 240V power is used.Tie-wrapTRANSFORMERTransmission

686. PROGRAM TIMER ADAPTERThis adapter is needed when a centralized remote controller(PAC-805RC)is used.6-2 Connection methodConnection and wiring met

69Adaptor 200~240V AC3-core cable 5-core cable 52To program timer orcentralized remotecontrollerFig.3CN30 CN50 CN51Remote controller Indoor unitMax

7Service Ref.ItemFunctionCapacityBtu/hWTotal input kWkWINDOOR UNITService Ref.Power supply(phase, cycle,voltage)InputARunning currentAStarting current

70Part No. PAC-SE01AS-EApplied Service Ref. PLH-1.6KKHB.UK/PLH-2KKHB.UK/PLH-2.5KKHB.UK7. SPACE PANELPart No. PAC-SE06WP-EApplied Service Ref. PLH-1.6K

71Part No. PAC-SE21TM-EApplied Service Ref. PLH-1.6KKHB.UK/PLH-2KKHB.UK/PLH-2.5KKHB.UK10. MULTI-FUNCTIONAL CASEMENTPart No. PAC-SE13KF-EApplied Servic

Issued in Jun. 1997 No. OC147 560 New publication, effective Jun. 1997Specifications subject to change without noticeHEAD OFFICE MITSUBISHI DENKI

8Service Ref.ItemFunctionCapacityBtu/hWTotal input kWkWINDOOR UNITService Ref.Power supply(phase, cycle,voltage)InputARunning currentAStarting current

9DATA41. PERFORMANCE DATA1) COOLING CAPACITYNote CA:Capacity (W)P.C.:Power consumption (kW)Cooling capacity correction factorsPLH-1.6KKHB.UKPLH-2KKHB.