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8-3-3. Only outdoor fan does not run.
• Check fan rotation.
Turn fan gently once or twice by
hand.
• Measure resistance of outdoor fan
motor winding.
• Check fan motor capacitor.
8-3-4. Only compressor does not run.
• Measure coil resistance of
starting relay.
• Measure resistance of
compressor motor winding.
• Measure coil resistance of
power relay.
Fan cannot
be turned.
OK
• Check capacitors.
• Either overload relay or
internal protector is working.
• Temperature of compressor
is abnormally high.
(PR)
Refrigerant gas shortage.
Rotor may be locked up.
• Check fan casing
foreign matter on
inside.
Fan motor burnout
or foreign matter in
bearings.
YES
YES
YES
YES
NO
38
Remove foreign
matter or repair.
Repair or replace.
Charge refrigerant gas (R22).
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