Haier 2HUM18HC03/R2 - Outdoor DC Fan Motor Fault

2HUM18HC03/R2(DB)-SM Wiring diagrams
53
Domestic air conditioner
7.3.4
Outdoor DC fan motor fault
Check whether Terminal on the outdoor
mainboard is well inserted. 
Is it normal?
Yes
NO
Reinsert the terminals
Electrify the machine again and turn
it on in the Cool state with the remote
controller. check whether motor can
run᧻
Yes
Measure the voltage between 3 and 6 of
the terminal about 0-5v.
Is it normal?
N0
the motor of the outdoor unit is damaged
and needs replacing.
Measure the voltage between 1 and 3 of the terminal of
fan motor on the mainboard about DC310V,Measure
the voltage between 3 and 4 of the terminal about
DC15V. Measure the voltage between 5 and 3 of the
terminal about 1-6v.
NO
Is it normal?
The mainboard of the outdoor unit is
damaged and needs replacing
N0
Yes
Yes