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User’s Troubleshooting
This Troubleshooting Chart is not prepared to replace the training required for a
professional refrigeration service person, not is it comprehensive.
Complaint
Possible Causes
Response
1. Unit not running
Power cord not plugged
No power from supply
Incorrect or loose wirings
Low voltage
Setting higher than
ambient
temperature
Waiting for cut-in
Defrost light blinking
Compressor light blinking
Defective controller
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
2. Unit not starting
and temperature
rising high
a. Anti-short cycle
a. Reset AC
3. Temperature
fluctuating
a. Air probe
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.
4. Temperature
high, unit stopping
and starting
normally
a. Temperature setting high
a. Lower the setting
5. Temperature
high, unit stopping
and starting with
short running
time
Air probe touching the evaporator
coil, displaying temperature ok
Air probe in cold-air supply,
displaying temperature ok
Failed controller and probe
Move the air probe away from the
evaporator
Move the air probe away from the
cold-air supply
Call service for diagnosis
6. Temperature
high or not cooling
and running
continually
Improper cellar insulation & seal
Cellar too large
Malfunctioning fans
Evaporator airflow
Check insulation, gasket and door
opening
Check for excessive size
Check for evaporator fans
Check for air restrictions, air short-
circulation, grille directions
