Haier AS26TB1HRA Service Manual

Also see for AS26TB1HRA: Operation manual

Service diagnosis37 Domestic air conditioner10.3.8 Power Supply Over or under voltage faultOutdoor display: ■ ★ □/ F19 LED1 flash 6 times The power supply is over voltageMethod of An abnormal voltage rise or fall is detected by checking the specified voltage detection circuit.MalfunctionDetectionMalfunction An voltage signal is fed from the voltage detection circuit to the microcomputerDecisionConditionsSupposed ■ Supply voltage not as specifiedCauses ■ the IPM module is broken■ the outdoor PCB is brokenTroubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or elseparts 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?