Equipment Operates But Does Not Provide Cooling - Daikin SkyAir GQI-Eco Series Service Manual

SiBE281013
2.6

Equipment Operates but does not Provide Cooling

Applicable Model All models of SkyAir series
Supposed
Causes
Service Diagnosis
Overcurrent relay (for compressor)
Overcurrent relay may act due to the following reasons
Lower voltage of power supply
Excess level of high pressure
Insufficient size of power cable
Defective compressor
Compressor protection thermostat
Compressor protection thermostat may act due to the following reasons
Internal leakage of four way valve (There is no difference between suction and discharge
temperature)
Insufficient compression of compressor
Incorrect refrigerant charge/leak
Defective electronic expansion valve
Insufficient circulation of refrigerant
Defective thermistors or thermistor out of position
Symptom-based Troubleshooting
91