8-3-3. Only compressor does not run.
8-3-4. Only flap motor does not run.
8-3-5. Function of outdoor fan speed control does not work properly. (GR/GRV127L5 Only)
• Check controller in outdoor unit.
(POW-CL128E)
• Check thermister in outdoor unit.
(TH)
Refer to 8-3 "Outdoor Fan Speed Control."
• Measure resistance of flap motor
winding.
• 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 (R22).
Rotor may be locked up.
(C1)
• Measure Power supply
voltage.
The voltage is too low.
No
32
