Procedure Of Troubleshooting - Gree GRH120DB-K6NA1A Service Manual

9.2 Procedure of Troubleshooting

1. Malfunction of Temperature Sensor F1
30
F4
~
Start
Is the wiring terminal between the
temperature sensor and the controller
loosened or poorly contacted?
No
No
Is there short circuit due to trip-
over of the parts
No
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
Is malfunction
eliminated
Yes
Make the parts upright
Is malfunction Yes
eliminated
No
Replace it with a
temperature sensor with
the same model
Is malfunction
eliminated
Yes
Yes
Installation and Maintenance