Mitsubishi Electric KA12 Manuel de service

TECHNICAL & SERVICE MANUALSPLIT-TYPE, HEAT PUMP AIR CONDITIONERSCONTENTS 1. TECHNICAL CHANGES ...22. REFERENCE MANUAL ...

10WIRED REMOTE CONTROLLERUnit: mm1301201943.583.546OC320G

1111WIRING DIAGRAM6SLZ-KA25VA(L).TH SLZ-KA35VA(L).TH SLZ-KA50VA(L).THSLZ-KA25VA(L)1.TH SLZ-KA35VA(L)1.TH SLZ-KA50VA(L)1.THSLZ-KA25VA(L)R2.TH SLZ-KA35V

127REFRIGERANT SYSTEM DIAGRAMPipe temperature thermistor/liquid (TH2)Distributorwith strainer#50Condenser/evaporator temperature thermistor(TH5)Room t

13TROUBLESHOOTING88-1. CAUTIONS ON TROUBLESHOOTING (1) Before troubleshooting, check the followings: Check the power supply voltage. Check that

14[Output pattern A] Errors detected by indoor unit[Output pattern B]E91. If the beeper does not sound again after the initial 2 beeps to confirm the

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

168-3. SELF-DIAGNOSIS ACTION TABLENote: Refer to the manual of outdoor unit for the details of display such as F, U, and other E.Error CodeAbnormal p

17Error CodeAbnormal point and detection method CauseCountermeasureP6Freezing/overheating protection is operating Freezing protection (Cooling mode)Th

18Error CodeAbnormal point and detection method CauseCountermeasureP9Pipe temperature thermistor / Condenser / Evaporator (TH5)1 The unit is in 3-minu

19E61 Contact failure, short circuit or, miswiring (converse wiring) of indoor/outdoor unit connecting wire2 Defective transmitting/receiv-ing circuit

21TECHNICAL CHANGESUse the specifi ed refrigerant onlyNever use any refrigerant other than that specifi ed.Doing so may cause a burst, an explosion, or

20PA(2502)(2500) Forced compressor stop (due to water leakage abnormality)1 When the intake temperature subtracted from liquid pipe temperature is le

218-4. TROUBLESHOOTING OF PROBLEMSNote: Refer to the manual of outdoor unit for the detail of remote controller.PhenomenaCauseCountermeasure(

228-5. TEST POINT DIAGRAM8-5-1. Indoor power boardSLZ-KA25VA(L).TH SLZ-KA35VA(L).TH SLZ-KA50VA(L).THSLZ-KA25VA(L)1.TH SLZ-KA35VA(L)1.TH SLZ-KA50VA(L)1

238-5-2. Indoor controller boardSLZ-KA25VA(L).TH SLZ-KA35VA(L).TH SLZ-KA50VA(L).THSLZ-KA25VA(L)1.TH SLZ-KA35VA(L)1.TH SLZ-KA50VA(L)1.THSLZ-KA25VA(L)R2

248-6. FUNCTIONS OF DIP SWITCH AND JUMPER WIREEach function is controlled by the dip switch on control P.C. board.Model setting and capacity setting a

258-7. TROUBLE CRITERION OF MAIN PARTSSLZ-KA25VA(L).TH SLZ-KA35VA(L).TH SLZ-KA50VA(L).THSLZ-KA25VA(L)1.TH SLZ-KA35VA(L)1.TH SLZ-KA50VA(L)1.THSLZ-KA25V

2601020304050-20-100 1020304050< Thermistor for lower temperature >Temperature ()Resistance (k)<Thermistor Characteristic graph>•Room te

27279 4-WAY AIR FLOW SYSTEM9-1. FRESH AIR INTAKE (LOCATION FOR INSTALLATION)At the time of installation, use the duct holes (cut out) located at the p

289-4. FIXING HORIZONTAL VANEHorizontal vane of each air outlet can be fixed according to the environment where it is installed.Setting procedure1) Tu

292910 DISASSEMBLY PROCEDUREOPERATING PROCEDURE PHOTOS & ILLUSTRATIONS1. Removing the air intake grille(1) Slide the knob of air intake grille to

33PARTS NAMES AND FUNCTIONSAuto Air Swing VaneDisperses airflow up anddown and adjusts the angleof airflow direction.GrilleFilterRemoves dust and poll

30OPERATING PROCEDUREPHOTOS & ILLUSTRATIONS7. Removing the pipe temperature thermistor/liquid (TH2) and condenser/evaporator temperature therm

31OPERATING PROCEDURE PHOTOS & ILLUSTRATIONS10. Removing the heat exchanger(1) Remove the panel. (Refer to procedure 3 )(2) Remove the drain pan.

32PARTS LIST (Non-RoHS compliant)11345610987No.Parts No.SpecificationRemarks(Drawing No.)WiringDiagramSymbolRecom-mendedQ'ty123456789101144114844

3333TO OUTDOORUNITELECTRICAL PARTSSLZ-KA25VAL.TH SLZ-KA25VA.THSLZ-KA35VAL.TH SLZ-KA35VA.THSLZ-KA50VAL.TH SLZ-KA50VA.THNo.Parts No.Parts nameSpecifi

34FUNCTIONAL PARTSSLZ-KA25VAL.THSLZ-KA35VAL.THSLZ-KA50VAL.THSLZ-KA25VA.THSLZ-KA35VA.THSLZ-KA50VA.THON/OFFRESETTOOWARMTOOCOOLMODEAUTO COOLDRYHEATFANVAN

35No.WiringDiagramSymbolRecom-mendedQ'ty1234567891011121314151617181920212223242526273PCS/SETE07 104 290E07 104 124E07 104 808E07 105 124E07 140

36FUNCTIONAL PARTSSLZ-KA25VA(L).THSLZ-KA35VA(L).THSLZ-KA50VA(L).THSLZ-KA25VA(L)1.THSLZ-KA35VA(L)1.THSLZ-KA50VA(L)1.THSLZ-KA25VA(L)R2.THSLZ-KA35VA(L)R2

3737No.RoHSWiringDiagramSymbol123456789101112131415161718192021222324252627E17104290E17104124E17104808E17105124E17140620E17141

38RoHS PARTS LIST (RoHS compliant)345610987No.RoHSParts No.SpecificationRemarks(Drawing No.)WiringDiagramSymbolRecom-mendedQ'ty123456789101144114

39RoHS PARTS LIST (RoHS compliant)TO OUTDOORUNITELECTRICAL PARTSSLZ-KA25VA(L).TH SLZ-KA35VA(L).TH SLZ-KA50VA(L).THSLZ-KA25VA(L)1.TH SLZ-KA35VA(L)1.TH

4PAR-21MAAON/OFF FILTERCHECKOPERATIONCLEARTESTTEMP.MENUBACK DAYMONITOR/SETCLOCKON/OFFTemperature setting buttonsDownUpTimer Menu button(Monitor/Set bu

HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPANCopyright 2005 MITSUBISHI ELECTRIC CORPORATIONDistributed in Aug. 2013

5● Wired remote controller°F°C°F°CERROR CODEAFTERTIMERTIME SUN MON TUE WED THU FRI SATONOFFHrAFTERFILTERFUNCTIONONLY1Hr.WEEKLYSIMPLEAUTO OFFDisplay Se

6SPECIFICATIONS4SLZ-KA25VA(L).THSLZ-KA25VA(L)1.THSLZ-KA25VA(L)R2.THUNIT: 570(22-7/16) PANEL: 650(25-9/16)UNIT: 208(8-3/16) PANEL: 20(13/16)UNIT: 5

7790807060504030201063 125 250 500 1000 2000 4000 8000APPROXIMATETHRESHOLD OFHEARING FORCONTINUOUSNOISENC-60NC-50NC-40NC-30NC-20NC-70OCTAVE BAND SOUND

8SLZ-KA50VA(L)SLZ-KA35VA(L)SLZ-KA25VA(L)SLZ-KA25VAL2Brand label(Case of Wired remote controller)Terminal blockTerminal block87Suspension bolt M10 or 3

99WIRELESS REMOTE CONTROLLERInstallation area• Area in which the remote controller is not exposed to direct sunlight• Area in which there is no heatin