Haier AS09/12GS2ERA - 7.3.11 Loop of the station detect error; 7.3.12 Over-current of the compressor

5
Domestic air conditioner
AS09/12GS2ERA 1U09/12BS1ERA-SM
Servive Diagnosis
7.3.11 Loop of the station detect error
Outdoor Display LED1 flash 18 times Indoor Display F11
LED1 flash 19 times
Indoor Display F28
Method of
the position of the compressor rotor can not detected normally
Malfunction
Detection
Malfunction when the 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
Ƶ Faulty compressor
Ƶ Faulty PCB
Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or
parts damage may be occurred.
Malfunction unso
7.3.12 Over-current of the compressor
Outdoor Display  LED1 flash 3 or 24 or 25 times

Method of The current of the compressor is too high
Malfunction
Detection


Malfunction when the IPM Module is damaged
Decision
or the compressor is damaged
YES
YES
NO
1. The wiring of compressor is
incorrect or the connection is
poor;
2. The compressor is damaged
IPM Module is damaged and
needs replacing.
At frist, the compressor start up ,soon
the compressor stopped with the LED1
on the outdoor PCB blinks˄1Hz˅for 19
times
the Malfunctions exist also, .
The compressor is damaged
replace a new one
Within 3 minutes after the machine
is supplied with power and turned
on with the remote controller, the
compressor couldnot stard up