10-3-4. Only compressor does not run.
• Check compressor motor
capacitor.
• Measure resistance of
compressor motor winding.
• Measure resistance of power
relay. (PR)
NO
YES
YES
Overload relay is working.
(Either OLR T or OLR A)
YES
Temperature of compressor
is abnormally high.
Refrigerant gas shortage. Charge refrigerant gas (R407c).
Rotor may be locked up.
(C1)
• Measure Power supply
voltage.
The voltage is too low.
No
64
