Haier HSU-12LEK03 [50/86] E1 room temperature sensor failure cn6 e2 heat exchange sensor failure cn6

Haier HSU-07HEK03 [50/86] E1 room temperature sensor failure cn6 e2 heat exchange sensor failure cn6
Service Diagnose
Domestic Air Conditioner
Troubleshooting
Caution

Be sure to turn off power switch before connect or disconnect connector, or else parts damage may be
occurred.
E1: Room temperature sensor failure CN6
E2: Heat-exchange sensor failure CN6
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 damaged or not?
YES
Sensor is broken,replace it with new sensor
The indoor PCB is broken, replace with new indoor PCB
NO
YES
whether terminal CN6 on
indoor PCB contact well?
Pull out the terminals on the indoor mainboard and
reinsert them
HSU-07 09 12L HEK03
49

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