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SELF-DIAGNOSIS AND TROUBLESHOOTING
OPEN-CIRCUIT AND SHORT-CIRCUIT TROUBLE OF T3
Is connection to connector of temperature sensor good?
Yes
Check the resistance of the temperature sensor according
to Annex
Is the resistance normal?
Yes
Indoor PCB is defective
OPEN-CIRCUIT AND SHORT-CIRCUIT TROUBLE OF T4
Is connection to connector of temperature sensor good?
Yes
Check the resistance of the temperature sensor according
to Annex
Is the resistance normal?
Yes
Indoor PCB is defective
HIGH TEMPERATURE PROTECTION OF CONDENSER
High temperature protection of condenser
Check the resistance of the temperature sensor according
to Annex , is it normal
Yes
Possible reasons:
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
• 26 •
No
Repair connector
No
Replace the sensor
No
Repair connector
No
Replace the sensor
No
Replace the sensor
DUCTAIR II - 0808-E
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