-11-
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 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
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. Malfunctioning fans
d. Evaporator airflow
a. Check insulation, gasket and door
opening
b. Check for excessive size
c. Check for evaporator fans
d. Check for air restrictions, air short-
circulation, grille directions
