Haier 1U35KEHFRA-NR Service Manual page 36

Turn on the unit and check if
the motor can run
NO
The indoor motor is damaged
and need replace
Measure whether there is a voltage
pulse (0-15VDC) between 4 and 5 of
the CN9 terminal on the indoor PCB
YES
YES
The indoor PCB is damaged
and need replace
36
Service Diagnosis
NO
Is it ok?