Haier D-Series Service Manual
Also see for AS09DCAHRA: Operation manual
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Contents
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Seivice diagnosis46 Domestic air conditioner10.4.8 Power Supply Over or under voltage faultOutdoor display: LED1 flash 6 times The power supply is over voltageAn abnormal voltage rise or fall is detected by checking the specified voltage detectioncircuit.An voltage signal is fed from the voltage detection circuit to the microcomputer■ Supply voltage not as specified■ the IPM module is broken■ the outdoor PCB is broken* Caution Be sure to turn off power switch before connect or disconnect connector, orelse parts damage may be occurred.Electrify the machine again and turn it on withthe remote controller. Check whether thecompressor is started normallyIs it ok?Yes Maybe there is some disturbanceNONo~230 is ok?YesYesThis question may be caused by the power. Repairthe power supply.NOChange the IPM moduleChange the IPM moduleTest the outdoor power supply(+310VDC) with a multimeter.check whether the poweris >150 V or <390V?TroubleshootingMalfunctionDetection ConditionsSupposed CausesMethod ofMalfunction Detection |
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