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Installation and Maintenance
Service Manual
.2 Procedure of Troubleshooting
Indoor unit
(1) Malfunction of Temperature Sensor F1, F2
Main detection points:
Malfunction diagnosis process:
Is the wiring terminal between the
temperature sensor and the controller
Start
Insert the temperature
sensor tightly
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Is malfunction
eliminated
Is malfunction
eliminated
Is malfunction
eliminated
Replace it with a
temperature sensor with
the same model
Make the parts upright
Is there short circuit due to trip-
over of the parts
Is the temperature sensor normal
Replace the mainboard with
the same model.
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