9-3-4. Only compressor does not run.
9-3-5. Function of outdoor fan speed control does not work properly.
• Check thermostat in outdoor unit.
Refer to 8-5 "Outdoor Fan Speed Control."
• Check compressor motor
capacitor.
NO
YES
YES
Internal protetctor is
working.
YES
Temperature of compressor
is abnormally high.
Refrigerant gas shortage.
Recover refrigerant. (R410A)
Rotor may be locked up.
• Measure Power supply
voltage.
The voltage is too low.
No
Evacuate the air conditioner.
YES
For compressor replacement
refer to "10-5. In case of
compressor malfunction".
CAUTION
In case of leakage, do not add refrigerant. The unit must be vacuumed
and recharged. This is because composition of refrigerant in the unit
has been changed due to leakage. See "10-6. In case refrigerant is leaking".
Charge refrigerant in liquid
state. (R410A)
• Measure resistance of
compressor motor winding.
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