Haier HSU09VHJ Service Manual page 58

LED1 flash 10 times:
:
: LED1 flash 13 times:
:
: LED1 flash 12 times:
LED1 flash 11times:
This type of error is detected by checking the thermistor input voltage to the microcomputer.
(A thermistor error is detected by checking the temperature)
The thermistor input is above 4.9V or below 0.1V with the power on.
The values may vary slightly in some models
Faulty connector connection
Faulty thermistor
Faulty PCB
Be sure to turn off power switch before connect or disconnect connector,
else parts damage may be occurred.
Check the connector connection.
Is it normal?
YES
Thermistor resistance check
Is it normal?
YES
Replace the outdoor unit PCB
HSU09VHJ DB -SM
NO
Correct the connection
NO
Replace the thermistor
56
Service Diagnosis
Domestic Air Conditioner
or