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Check the connector connection.
Is it normal?
Thermistor resistance check
Is it normal?
Thermistor resistance check method:
Remove the connector of the thermistor on the PCB, and measure the resistance of thermistor using tester. The
●
relationship between normal temperature and resistance is shown in the value of indoor thermistor.
NO
Yes
NO
Yes
Correct the connection
Replace the thermistor
Replace the indoor unit PCB
31
Service diagnosis
Domestic air conditioner
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