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9-3-4. Only compressor does not run.
Check compressor motor
capacitor.
Measure resistance of
compressor motor winding.
No
Yes
Yes
Is overload relay (OLR)
working ?
Yes
Is temperature of compressor
abnormally high ?
Measure Power supply
voltage.
Is the voltage too low ?
No
Does refrigerant gas shortage ? Charge refrigerant gas (R22).
Rotor may be locked up.
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