Haier AS25S2SD1FA-CL Service Manual page 52

10.4.11 Loss of synchronism detection
Inverter side current detection is abnormal
Outdoor Display
Method of
Malfunction Detection
Malfunction
Detection Conditions
Supposed Causes
Troubleshooting
Within 3 minutes after the machine is
supplied with power and turned on with
the remote controller, check whether
At first, the compressor start up ,soon the
compressor stopped with the LED1 on the
outdoor PCB blinks 1Hz 19/18 times
Maybe there is some disturbance
LED1 flash 18 times
LED1 flash 19 times
The position of the compressor rotor can not detected normally
when the wiring of compressor is wrong or the connection is poor;
or the compressor is damaged
Faulty The wiring of compressor
Faulty compressor
Faulty PCB
* Caution Be sure to turn off power switch before connect or disconnect connector, or parts
YES
damage may be occurred.
NO
1. The wiring of compressor is incorrect
or the connection is poor;
2. The compressor is damaged
YES
IPM Module is damaged and needs
replacing.
Malfunction unsolved
the
compressor is damaged replace a
new one
50
Circuit diagrams
Malfunctions exist also,
Domestic air conditioner
the