Gree GWHD(18)NK3FO Service Manual page 41

6. Temperature sensor malfunction
Main checking points:
If the temperature sensor is damaged or broken ;
If the terminal of the temperature sensor is loosended or not connected;
If the mainboard is broken;
Flow chart:
Check whether the wiring terminal between
temperature sensor and controller is loosened or poorly
Check whether the
temperature senspr is normal according to
Replace the controller with
Start
contacted?
no
resistance table
yes
the same model
End
yes
Insert the temperature
sensor tightly
no
Eliminate the
malfunction
no
Replace the temperature sensor
with the same model
no
Eliminate the malfunction
yes
yes
6.