Haier HSU-07HEA03/R2 Operation Manual page 13

Pull the sensor out of the mainboard
1) Measure the value of resistance Between its two
jumpers
2) Measure the temperature at the room temperature
sensing head.
Check the value of the
sensor to see whether the
sensor is damaged or not?
The indoor PCB is broken, replace with new indoor PCB
E4 Indoor EEPROM error: Replace the PCB of indoor unit
E14 :Indoor fan motor malfunction
Notes:
When the unit is on ,don't pull out or insert the terminal of the motor (CN601), or else
The motor would be damaged.
Be sure to turn off power switch before connect or disconnect connector,
be occurred.
HSU-18,22HEA03/R2
NO
YES
Sensor is broken,replace it with new sensor
67
Service Diagnosis
or else parts damage may
Domestic Air Conditioner