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Troubleshooting
2.3. Solving steps for typical malfunction
(1) For indoor unit
a. Indoor room temperature T1 and sensor evaporator temperature sensor T2 is abnormal
Is connection to connector of temp. sensor good?
Yes
Check the resistance of the temp. sensor according to Appendix 1
Is it the resistance is normal?
Yes
Indoor PCB is defective.
b. Condenser temperature sensor T3 is abnormal
Is connection to connector of temp. sensor good?
Yes
Check the resistance of the temp. sensor according to Appendix 1
Is it the resistance is normal?
Yes
Indoor PCB is defective.
No
Replace the sensor
No
Replace the sensor
No
Repair connector
No
Repair connector
Electrical Control
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