Haier AB12CS1ERA Service Manual page 395

Super Match
Communication failure between module ans ECU
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
Solve the failures due
to relative information
Module operated overload
Check if voltage of power
supply is normal
Check if wiring of
electric box is correct
If compressor is
normal(compressor coil
resistor, insulation)
If power module is
normal
Compressor load too
much,check the reason
Y
N
Y
N
Y
N
N
Y
N
Y
N
Y
N
Y
Adjust communication wire
Replace PCB
Replace power module
Improve power supply circuit
Correct the wiring due to diagram
Replace compressor
Replace power module
393