Haier HSU-24C13 HSU-22C13 - GENERAL TROUBLESHOOTING; Performance Checks; Multiple System Checks

Air Conditioner
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Edition:2006/01/09
2. Fan Motor or Related Abnormality
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The rotation speed detected by the Hall IC during fan motor operation is used
to determine
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abnormal fan motor operation
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when the detected rotation feedback singal don’t receiced in 2 minutes
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Operation halt due to breaking of wire inside the fan motor .
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Operation halt due to breaking of the fan motor lead wires
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Dedection error due to faulty indoor unit PCB
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Yes
NO
YES
whether terminal CN6 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 dama
g
ed or not?
NO
Sensor is broken,replace it with new sensor
The indoor PCB is broken, replace with new indoor PCB
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