Service Diagnosis
37
10.4.4
Outdoor DC fan motor fault
Outdoor display F8 LED1 flash 9 times
DC fan motor is detected by checking the fan running condition and so on
When the detected rotation feedback signal don’t received in2 minutes
■ DC fan motor protection dues to the DC fan motor faulty
■ DC fan motor protection dues to faulty PCB
* Caution: Be sure to turn off power switch before connect or disconnect connector,
or else parts damage may be occurred.
Method of
Detection
Trouble
shooting
Supposed
Causes
Malfunction
Decision
Conditions
Check whether terminal
on the outdoor mainboard
is well inserted.
It is normal
NO
Reinsert the terminal
YES
Electrify the machine again and
turn it on in the cooling state with
the remote control. Check
whether the motor could run
.
YES
The motor and outdoor PCB
are well
NO
Remove fan motor after switch off
the power. Measure the
resistances between black line
and red line, between black line
and white line of the fan motor
