Procedure Of Troubleshooting - Gree IWZA Service Manual

9.2 Procedure of Troubleshooting

1. Malfunction of Temperature Sensor F1, F2
Main detection points:
● Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted?
● Is there short circuit due to trip-over of the parts?
● Is the temperature sensor broken?
● Is mainboard broken?
Malfunction diagnosis process:
58
Start
Is the wiring terminal between the
temperature sensor and the controller
loosened or poorly contacted?
No
Is there short circuit due to trip-
over of the parts
No
Is the temperature sensor normal
according to the resistance table?
Yes
No
Replace the mainboard with
the same model.
End
Yes
Insert the temperature
sensor tightly
No Is malfunction
eliminated
Yes
Make the parts upright
No Is malfunction
eliminated
No
Replace it with a
temperature sensor with
the same model
Is malfunction
eliminated
Yes
Service Manual
Yes
Yes
Installation and Maintenance