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This Troubleshooting Chart is not prepared to replace the training required for a
professional refrigeration service person, not is it comprehensive.
Complaint
Possible Causes
1. Unit not running
Power cord not plugged
No power from supply
Incorrect or loose wirings
Low voltage
Setting higher than
temperature
Waiting for cut-in
Defrost light blinking
Compressor light blinking
Defective controller
2. Unit not starting
a. Anti-short cycle
and temperature
rising high
3. Temperature
a. Air probe
fluctuating
4. Temperature
a. Temperature setting high
high, unit stopping
and starting
normally
5. Temperature
Air probe touching the evaporator
high, unit stopping
coil, displaying temperature ok
and starting with
Air probe in cold-air supply,
short running
displaying temperature ok
time
Failed controller and probe
6. Temperature
Improper cellar insulation & seal
high or not cooling
and running
Cellar too large
continually
Malfunctioning fans
Evaporator airflow
User's Troubleshooting
ambient
-11-
Response
Check power cord
Check receptacle and fuses
Check all wirings and connections
Contact an authorized electrician
Lower temperature setting
Wait
Unit is under defrost mode
Unit is under anti-short cycle delay
Call service for diagnosis
a. Reset AC
a. When using an air probe, the wine
bottle temperature is mainly
controlled by the average air
temperature. If the set-point is 55°F
with the differential 4F, the cooling
unit turns on at 59°F of air
temperature (It may be higher than
59°F if it is in anti-short cycle or
defrost) and turns off at 55°F of air
temperature. The average air
temperature is 57°F, and then the
wine temperature is around 57+/-
0.5°F. The air is light enough to
change so quickly that it maintains
relatively constant average
temperature that would prevent wine
bottle temperature from fluctuating.
a. Lower the setting
Move the air probe away from the
evaporator
Move the air probe away from the
cold-air supply
Call service for diagnosis
Check insulation, gasket and door
opening
Check for excessive size
Check for evaporator fans
Check for air restrictions, air short-
circulation, grille directions
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