Si20-701_B Symptom-based Troubleshooting
38
2.5 After Unit Shuts Down, It
cannot be Restarted for a
While
Applicable Model
All models of SkyAir series
Supposed Causes
îš„ 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
îš„ 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 air temperature and
discharge pipe temperature)
• Insufficient compression of compressor
• Incorrect refrigerant
• Defective electronic expansion valve
• Insufficient circulation of refrigerant
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