HSU12HG(DB)-SM Service Diagnosis
54
Domestic Air Conditioner
7.3.3 Outdoor DC fan motor fault
YES
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
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
YES
N0
Measure the voltage between 3
and 6 of the terminal about 0-5v.
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