f. Open-circuit and short-circuit trouble of T4
g. High temperature protection of condenser
Is connection to connector of temp. sensor good?
Check the resistance of the temp. sensor according to Annex 1 Repair connector
No
Yes
No
High temperature protection of condenser
Check the resistance of the temp. sensor
according to Annex 1, is it normal?
Possible reason
1. Air or other gas in the refrigerant.
2. Heat exchanger is dirty
3. Outdoor fan or fan blade is defective
4. Outdoor unit is bad ventilation
5. Refrigerant is leakage
6. Outdoor PCB is defective
Replace the sensor
No
Yes
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