Sanyo STW-2 Series Technical & Service Manual page 50

7-3-3. Only compressor does not run.
A. Check setting temperature.
COOL mode
Is room temperature too low ?
Try to lower setting temperature by
turning thermostat knob in cooler
direction.
B. Check compressor and electrical parts.
• Check compressor motor
capacitor.
• Measure resistance of
compressor motor winding.
CAUTION
NO
Overload relay is working.
Temperature of compressor
is abnormally high.
Refrigerant gas shortage.
Rotor may be locked up.
Cooling & electric heating models
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 mode (Only for heat pump model)
Is room temperature too high ?
Try to raise setting temperature by
turning thermostat knob in warmer
direction.
(OLR)
YES
YES
YES
NO
Heat pump models
46
NO
Charge refrigerant gas (R22).