Haier AB12CS1ERA Service Manual page 396

Voltage too high or low
Check if voltage of power
supply is normal
Y
Check if wiring of
electric box is correct
Y
In operation, check power
module voltage between
terminal P&N more than
390V or less than 160V
Y
Check rectifier, rector,
electrolytic capacitor in
inverter main circuit
N
Improve power supply circuit
N
Correct the wiring due to diagram
N
Replace power module
394
Super Match