Haier AP242ACAAA - Page 61

51
Indoor ambient temperature sensor short out
or shutdown
Indoor coiled temperature sensor short out or
shutdown
Outdoor ambient temperature sensor short out
or shutdown
Outdoor coiled temperature sensor shout out
or shutdown
R2 is broken
CT2 is broken
2803 is broken
Connecting line isn't well connected with
CN1 on indoor plate
2803 is broken
Relay J2 is broken
Relay J2 is broken
2803 is broken
Relay J3 is broken
Relay J3 is broken
2803 is broken
Relay J4 is broken
Check if sensor is well connected
or broken
Check if sensor is well connected
or broken
Check if sensor is well connected
or broken
Check if sensor is well connected
or broken
Change for qualified R2
Change for qualified CT2
Change for qualified 2803
Insert connector
Change for qualified 2803
Change for qualified relay
Change for qualified relay
Change for qualified 2803
Change for qualified relay
Change for qualified relay
Change for qualified 2803
Change for qualified relay
Display E1
Display E2
Display E3
Display E4
Resisting value of electric resistance R2
isn't 100
CT2 didn't output
2803 on indoor plate didn't output
Output of relay J2,J3,J4 is normal
Foot 17 of 2803 on indoor plate didn't
output
COM terminal of relay J2 on indoor
plate has no voltage
Relay J2 on indoor plate didn't output
Foot 16 of 2803 on indoor plate didn't
output
COM terminal of relay J3 on indoor
plate has no voltage
Relay J3 on indoor plate didn't output
Foot 15 of 2803 on indoor plate didn't
output
Relay J4 on indoor plate didn't output
Failure of sensor
Display E7,but current
is normal
Indoor fan motor don't
run
Indoor fan motor is
absent of low speed
Indoor fan motor is
absent of medium
speed
Indoor fan motor is
absent of high speed
Failure
Inspection result
Possible failure cause Corresponding resolution