Haier AB25S2SC1FA, Service Manual

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[4] Communication failure between module ans ECU
Adjust communication wire
Check if wire between
PCB and power module is
abnormal
Check if communication
circuit of PCB is
abnormal(if signal LED
flashes abnormally)
If power module is
abnormal
Replace PCB
Replace power module
N
N
Y
Y
Solve the failures due
to relative information
Y
N
[5] Module operated overload
Improve power supply circuit
Check if voltage of power
supply is normal
Check if wiring of
electric box is correct
If compressor is
normal(compressor coil
resistor, insulation)
Correct the wiring due to diagram
Replace compressor
Y
Y
Y
N
N
Compressor load too
much,check the reason
N
If power module is
normal
Replace power module
N
Y