Haier AS35RBAHRA-PL, Руководство по обслуживанию

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Service Diagnosis
32
10.4.3 Indoor DC fan motor
malfunction
Indoor Display E14 Indoor DC fan motor malfunction
When the fan motor is running, the speed detected by the Hall IC is used to judge the
abnormal operation of the fan motor
When the detected rotation feedback signal don’t received in 2 minutes
■ Operation halt due to breaking of wire inside the fan motor.
■ Operation halt due to breaking of the fan motor lead wires
■ Detection error due to faulty indoor unit PCB
* Caution: Be sure to turn off power switch before connect or disconnect connector,
or else parts damage may be occurred.
Trouble
shooting
Method of
Malfunction
Detection
Supposed
Causes
Malfunction
Decision
Conditions
Pull out the terminals
on the indoor
mainboard and
reinsert them.
Check whether Terminals
on indoor PCB is well?
YES
NO
The voltage is about 310VDC
YES
NO
The indoor PCB is
damaged and need
replace
7 6 5 4 3 2
1
. Electrify the machine again and turn it
on in the cooling operation.
Measure voltage between the positions
1and 4 of Terminal CN9 on the indoor
PCB