Manuals / Mitsumi electronic / Household Appliance / Air Conditioner

Mitsumi electronic PKA-A18HA4, PKA-A12HA4 service manual

Models: PKA-A18HA4 PKA-A12HA4

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Mitsumi electronic PKA-A18HA4, PKA-A12HA4 service manual

Contents

CONTENTS Indoor unit Model names Service RefNovember SPLIT-TYPE,HEAT PUMP AIR CONDITIONERSRemote controller Optional parts REFERENCE MANUALIR wireless remote controller Radio frequency interface2-1.ALWAYS OBSERVE FOR SAFETY 2 SAFETY PRECAUTION1Cautions for service 2-2.CAUTIONS RELATED TO NEW REFRIGERANT3 PART NAMES AND FUNCTIONS 3 Service toolsUnit Gravimeter Indoor unitDisplay Section Wired remote controller OptionOperation Section TEMPTemperature setting display IR wireless remote controller OptionTIMER display TIMER CONTROL buttonsService Ref 4 SPECIFICATIONSService Ref PKA-A12HA4PKA-A12HA4 PKA-A18HA4 5 NOISE CRITERION CURVESNC-70 NC-606 OUTLINES AND DIMENSIONS PKA-A12HA4 PKA-A18HA4Unit inch mm 7 WIRING DIAGRAM PKA-A12HA4PKA-A18HA4 8 REFRIGERANT SYSTEM DIAGRAM PKA-A12HA4 PKA-A18HA4Heat exchanger 9-1.TROUBLESHOOTING 9 TROUBLESHOOTINGProcedure IR wireless remote controllerWired remote controller In case of trouble during operationOutput pattern B On IR wireless remote controller Error Code 9-3. SELF-DIAGNOSISACTION TABLERoom temperature thermistor TH1 Pipe temperature thermistor/LiquidPipe temperature Error Code Abnormal point and detection methodCause CountermeasureRemote controller transmission Pipe temperature thermistorerrorE0/signal receiving errorE4 CauseerrorE3/signal receiving errorE5 Remote controller transmissionerror Signal receiving error error Transmitting errorPhenomena 9-4.TROUBLESHOOTING BY INFERIOR PHENOMENACause Countermeasure9-5.EMERGENCY OPERATION 9-6-1.Thermistor 9-6.HOW TO CHECK THE PARTS PKA-A12HA4 PKA-A18HA4Is the voltage normal? Sensor signal checkReplace the fuse9-7.TEST POINT DIAGRAM PKA-A12HA4 PKA-A18HA4Indoor controller board 9-8.FUNCTIONS OF DIP SWITCH AND JUMPER WIRE 10-1-1.Operation 10 SPECIAL FUNCTIONSystem constraint 22nd stage cut-infunction Outline of functionsSystem constraint 1 Request Code ListOutline of functions 10-2. BACK-UPHEATING FUNCTION CN152OPERATION PROCEDURE DISASSEMBLY PROCEDUREPHOTOS & ILLUSTRATIONS Corner holeOPERATION PROCEDURE PHOTOSAND IR WIRELESS CONTROLLER BOARD 3. REMOVING THE INDOOR CONTROLLER BOARDPHOTOS OPERATION PROCEDURE10. REMOVING THE ROOM TEMPERATURE THERMISTOR OPERATION PROCEDUREPHOTOS 8. REMOVING THE LIQUID PIPE THERMISTOR ANDPage Page Page New publication, effective Nov Distributed in Nov. 2010 No.OCH483Made in Japan