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Disturbance Cause Troubleshooting Remedy
Defective thermostat. 1.Turn thermostat knob to
zero. 2.Compressor
continues to run.
3.Dismount brown wire.
4.Compressor continues
to run. 5.Compressor
stops.
4.Check internal wiring
for short circuit (fast-
freeze switch). 5.Replace
thermostat.
Compressor starts
normally but stops
again.
Extremely high
voltage.
Measure voltage. Inform user.
High ambient
temperature. Poor
ventilation.
Measure temperature and
check ventilation around
compressor.
Improve ventilation.
Can be normal. Check temperature in
unit.
Inform user.
Unit
refrigerates/freezes
too much, normally,
too little or not at all.
Compressor may run
continuously.
Leakage in system
with resulting loss of
refrigerant.
Symptom: Evaporator not
wholly utilized. Localize
leak with electronic leak
detector-first at soldering
joints, pipes and
compressor in motor
compartment. Next in the
evaporator and condenser.
When leak is localized,
cover area with a layer of
Leak-Tec or liquid soap.
Bubbles will appear at the
exact site of leakage.
After repairing leakage,
repair system as in the
case of ice blockage in
capillary tube. See
relevant section in chart.
Check pressure side with
compressor running and
suction side when
pressure ise equalized. If
refrigerant pressure is
insufficient for leak
detection, install a service
valve on charging pipe
and refrigerant and N
2
(approximately
10kg/cm
2
). Repeat leak
detection.
No-Frost Fan is not operating. Electric connections.
Check and see if blade is
fixed properly on shaft.
Blade is fixed or
replaced.
5.