Service diagnosis
7.4.11
Loop of the station detect error
Outdoor display
Domestic air conditioner
Method of
malfunction
detection
Malfunction
detection
conditions
Supposed
causes
Troubleshooting
'
Be sure to turn off power switch before connect or disconnect connector, or
else
parts damage may be caused
ƵFaulty the wiring of compressor
ƵFaulty compressor
ƵFaulty PCB
LED1 flash 18 times Indoor Display F11
LED1 flash 7 times Indoor Display F27
LED1 flash 19 times Indoor Display F28
The position of the compressor rotor can’t detected normally
● When the wiring of compressor is wrong or the connection is poor;
● The compressor is damaged;
NO
Malfunction unsolved
YES
YES
1. The wiring of compressor is
broken or the connection is
poor;
2. The compressor is damaged
IPM Module is damaged and
needs replacing.
At first, the compressor start up ,soon
the compressor stopped with the LED1
on the outdoor PCB blinks˄1Hz˅for
18/19 times
The Malfunctions exist also.
The compressor is damaged.
Replace a new one
Within 3 minutes after the machine
is electrified and turn on with the
remote controller, the compressor
could not start up
2## )# ) ))#
#)