Haier 1U12BE2ERA Service Manual

Contents

Circuit diagramsDomestic air conditioner11.4.11 Loss of synchronism detectionInverter side current detection is abnormalWithin 3 minutes after the machine issupplied with power and turned on withthe remote controller, check whetherthe compressor can start up1. The wiring of compressor is incorrector the connection is poor;2. The compressor is damagedAt first, the compressor start up ,soon thecompressor stopped with the LED1 on theoutdoor PCB blinks 1Hz 19/18 timesIPM Module is damaged and needsreplacing.the Malfunctions exist also, thecompressor is damaged replace anew oneYESNOYESMalfunction unsolvedMaybe there is some disturbanceMethod ofmalfunction detectionMalfunction detectionconditionsTroubleshootingThe position of the compressor rotor can not detected normallywhen the wiring of compressor is wrong or the connection is poor; or the compressoris damagedFaulty The wiring of compressorFaulty compressorFaulty PCBSupposed causes* CautionBe sure to turn off power switch before connect or disconnect connector, or elseparts damage may be occurred.LED1 flash 18 timesLED1 flash 19 timesOutdoor diplay58

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