Haier 2HUM18HC03/R2 Service Manual

Also see for 2HUM18HC03-R2: Installation manual Installation manual Operation manual Installation manual

2HUM18HC03/R2(DB)-SM Wiring diagrams54Domestic air conditioner7.3.5 IPM protectionOutdoor display LED1 flash 2 timesMethod of IPM protection is detected by checking the compressor running condition and so onMalfunctionDetectionMalfunction Ƶ The system leads to IPM protection due to over currentDecision Ƶ The compressor faulty leads to IPM protectionConditions Ƶ circuit component of IPM is broken and led to IPM protectionSupposed Ƶ IPM protection dues to the compressor faultyCauses Ƶ IPM protection dues to faulty PCB of IPM moduleƵCompressor wiring disconnectedTroubleshooting * 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 onwith the remote controller,If malfunctionsare reported before or upon thecompressor being started up,IPM Module is damaged andneeds replacing.1ᇬThe system may have been over or under charged with gas, which can be judged through the pressure of themeasuring system.2ᇬThe shaft of compressor is seized and the compressor needs replacing.<(612The compressor is started normally, butmalfunctions are reported after it has run forsome time.Malfunction unsolved