Haier HSU-07HEA03/R2 - Page 10

E4˖Indoor EEPROM error:˖Replace the PCB of indoor unit
NO
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 dama
g
ed or not?
YES
Sensor is broken,replace it with new sensor
The indoor PCB is broken, replace with new indoor PCB
HSU-18,22HEA03/R2 Service Diagnosis
64
Domestic Air Conditioner