9-3-4. Only outdoor fan does not run.
9-3-5. Only compressor does not run.
• Check compressor motor
capacitor.
• Measure resistance of
compressor motor winding.
• Measure coil resistance of
power relay.
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 (R22).
Rotor may be locked up.
(C1)
• Measure Power supply
voltage.
The voltage is too low.
No
Fan cannot
be turned.
OK
• Check fan rotation.
Turn fan gently once or twice by
hand.
• Check fan casing
foreign matter on
inside.
Fan motor burnout
or foreign matter in
bearings.
Remove foreign
matter or repair.
Repair or replace.
• Measure resistance of outdoor fan
motor winding.
• Check fan motor capacitor.
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