Haier H2SM-(9+12)HEK03/R2 User Manual

H2SM-(9+12)HEK03/R2
Service Diagnosis
Domestic Air Conditioner
49
7.4. Trouble Shooting
7.4.1 Thermistor or Related Abnormality (indoor unit)
Indoor Display
E1:Room temperature sensor failure
E2:Indoor heat-exchange sensor failure
Method of Malfunction
Detection
The temperatures detected by the thermistors are used to determine thermistor errors
Malfunction Decision
Conditions
When the thermistor input is more than 4.92V or less than 0.08V during compressor
operation. (* Note: The values vary slightly in some models)
Supposed Causes
Faulty connector connection
Faulty thermistor
Faulty PCB
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts damage
may be occurred.
whether terminal CN8 on
indoor PCB contact wellt?
Pull out the terminals on the indoor
mainboard and reinsert them
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
Sensor is broken,replace it with new
sensor
YES
YES
NO
NO

Haier H2SM-(9+12)HEK03/R2 Specifications

General

Brand	Haier
Model	H2SM-(9+12)HEK03/R2
Category	Air Conditioner
Language	English