7-3-3. Only compressor does not run.
A. Check setting temperature.
B. Check compressor and electrical parts.
●
The compressor does not start up immediately even when the MODE selector
switch is set to COOL or HEAT. (It starts operating in about 3 minutes.)
●
This is because an approximate 3-minute timer is built into the unit in order to
protect the compressor. When operation is started up or restarted, the fan
operation begins immediately but the compressor starts operating after about
a 3-minute lag.
Heat pump models
Cooling & electric heating models
•
Check compressor motor
capacitor.
•
Measure resistance of
compressor motor winding.
NO
YES
YES
Overload relay is working.
(OLR)
YES
Temperature of compressor
is abnormally high.
Refrigerant gas shortage. Charge refrigerant gas (R22).
Rotor may be locked up.
NO
Is room temperature too low ?
Try to lower setting temperature by
turning thermostat knob in cooler
direction.
COOL mode
NO
Is room temperature too high ?
Try to raise setting temperature by
turning thermostat knob in warmer
direction.
HEAT mode
(Only for heat pump model)
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