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9-3-4. Only outdoor fan does not run.
• Check fan rotation.
Turn fan gently once or twice by
hand.
• Measure resistance of indoor fan
motor winding.
• Check fan motor capacitor.
9-3-5. Only compressor does not run.
• Check compressor motor
capacitor.
(C1 or C2)
• Measure resistance of
compressor motor winding.
• Measure resistance of power
relay.
• Measure Power supply
voltage.
The voltage is too low.
Fan cannot
be turned.
OK
Internal protector is working.
Temperature of compressor
is abnormally high.
Refrigerant gas shortage.
(PR)
No
Rotor may be locked up.
• Check fan casing
foreign matter on
inside.
Fan motor burnout
or foreign matter in
bearings.
NO
YES
YES
NO
34
Remove foreign
matter or repair.
Repair or replace.
Charge refrigerant gas (R22).
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