Service diagnosis
44 Domestic air conditioner
10.3.11 Loss of synchronism detection
Inverter side current detection is abnormal
Outdoor Display
LED1 flash 18 times
LED1 flash 19 times
Method of The position of the compressor rotor can not detected normally
●
Malfunction
Detection
Malfunction when the wiring of compressor is wrong or the connection is poor;
●
Decision or the compressor is damaged
Conditions
Supposed
■
Faulty The wiring of compressor
Causes
■
Faulty compressor
■
Faulty PCB
Troubleshooting
* Caution
Be sure to turn off power switch before connect or disconnect connector, or parts
damage may be occurred.
Within 3 minutes after the machine is
supplied with power and turned on with
●
the remote controller, che
1. The wiring of compressor is incorrect
or the connection is poor;
2. The compressor is damaged
At f
●
irst, the compressor start up ,soon the
compressor stopped with the LED1 on the
outdoor PCB blinks（1Hz）19/18 times
IPM Module is damaged and needs
replacing.
the Malfunctions exist also, the
compressor is damaged replace a
new one
●
YES
NO
YES
Malfunction unsolved
Maybe there is some disturbance
To Next Page
Loading...
