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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
a. Power cord not plugged
b. No power from supply
c. Incorrect or loose wirings
d. Low voltage
e. Setting higher than ambient
temperature
f.
Waiting for cut-in
g. Defrost light blinking
h. Compressor light blinking
i.
Defective controller
a. Check power cord
b. Check receptacle and fuses
c. Check all wirings and connections
d. Contact an authorized electrician
e. Lower temperature setting
f.
Wait
g. Unit is under defrost mode
h. Unit is under anti-short cycle delay
i.
Call service for diagnosis
2. Unit not starting , but
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 cycle)
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
a. Air probe touching the evaporator
coil, displaying temperature ok
b. Air probe in cold-air supply,
displaying temperature ok
c. Failed controller and probe
a. Move the air probe away from the
evaporator
b. Move the air probe away from the cold-
air supply
c. Call service for diagnosis
6. Temperature high or
not cooling and
running continually
a. Improper cellar insulation & seal
b. Cellar too large
c. Ambient temperature too high
d. Exhaust restricted
e. Malfunctioning fans
a. Check insulation, gasket and door
opening
b. Check for excessive size
c. Check installation location
d. Leave minimum 3 feet clearance for the
hot air exhaust side and leave minimum
1 foot clearance for the ambient air
intake side
