Service diagnosis
7.4.4 Outdoor DC fan motor fault
Indoor Display F8
Outdoor display Outdoor LED1 flash 9 times
Domestic air conditioner
Method of
malfunction
detection
Malfunction
detection
conditions
Supposed
causes
Troubleshooting
Check whether terminal on the outdoor
PCB is well inserted.
YES
NO
Reinsert the terminals
YES
The fan speed detected by the Hall IC during fan motor running which is used
to determine the fan motor operating
When there is no fan speed feedback signal within 2 minutes
ƵOperation stops due to fan motor wiring disconnection
ƵOperation stops due to wiring disconnection between PCB and indoor motor
ƵDetection error due to faulty indoor PCB
'
Be sure to turn off power switch before connect or disconnect connector, or
else
parts damage may be caused
Electrify the machine again
and set unit at cooling mode with
remote controller, check whether
motor run normally?
NO