7-3. Some part of air conditioner does not operate.
7-3-1. Only outdoor fan does not run.
7-3-2. Only compressor does not run.
7-3-3. Function of outdoor fan speed control does not work properly.
Check thermostat in outdoor unit.
(23S)
Measure resistance of
compressor motor winding.
•
NO
Check compressor motor
capacitor.
•
YES
YES
YES
Overload relay is working.
Refrigerant gas shortage.
Charge refrigerant gas (R22).
Temperature of compressor is
abnormally high.
Rotor may be locked up.
(OLR 1 to 4)
(C2,C3)
Fan cannot
be turned.
Check fan casing
for foreign matter
on inside.
Check fan rotation.
Turn fan gently once or twice
by hand.
•
Measure resistance of outdoor fan
motor winding.
•
OK
•
Fan motor burnout
or foreign matter
in bearings.
Repair or replace.
Remove foreign
matter or repair.
Check fan motor capacitor.
•
21
