30
(4) Anti-high temperature and overload malfunction Main checking points:
●
If the outdoor ambient temperature is within the normal range;
●
If the outdoor fan is running normally;
●
If the indoor and outdoor radiation environment is good;
(5) Temperature sensor malfunction
Main checking points:
●
If the temperature sensor is damaged or broken;
●
If the terminal of the temperature sensor is loosened or not connected;
●
If the mainboard is broken;
Flow chart:
Start
If the outdoor ambient temperature
is above 53°C
If the indoor and outdoor radiation is insufficient
If the outdoor fan is working normally
Replace outdoor mainboard
End
It is a normal protection, please
operate the unit after the outdoor
ambient temperature has changed
Improve the radiation environment of the unit
Check if the terminal of the fan is
connected well, if the fan is broken
Replace fan capacitor
Replace outdoor fan
Yes
Yes
Yes
No
No
No
Start
Check whether the wiring terminal between
temperature sensor and controller is
loosened or poorly contacted?
Check whether the temperature sensor
is normal according to resistance table
Replace the controller
with the same model
End
Insert the temperature
sensor tightly
Eliminate the malfunction
Replace the temperature
sensor with the same model
Eliminate the malfunction
Yes
Yes
Yes
Yes
No
No
No
No
