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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
a. No power
1.Unit not
b. Power cord unplugged
running
c. Setting higher than ambient
d. Defrost light blinking
e. Compressor light blinking
f.
g. Low voltage.
a. Air sensor
2.Displaying
Temperature
fluctuating
a. air
3.Temperature
high, but
b. Short circuit of air flow between
displaying
temperature
c. Setting too high
low, unit
d. Failed
stopping and
starting with
short
running time
a. Incorrect voltage
4.Temperature
b. Failed components
high,
compressor
c. Improper condenser airflow
stopping and
d. Dirty condenser
starting but
e. Overcharge of refrigerant
f.
short
running time
a. Improper room insulation & seal
5.Not cooling
or
b. Room too large
User's Troubleshooting
Troubleshooting Chart
Possible Causes
temperature
Incorrect or loose wirings.
sensor
contacting
evaporator
supply and return air
temperature
controller
and air sensor
Discharge or suction pressure
too high
- 17 -
Response
a. Check power at receptacle & fuses
b. Check for power cord plug
c. Lower temperature setting
d. Unit is under defrost mode
e. Unit waits for anti-short cycle delay
f.
Check all wirings and connections
g. Contact an authorized electrician
When using an air sensor, the wine
bottle temperature is mainly controlled
by the average air temperature. If the
°
set-point is 55
F with a differential 4
the cooling unit turns on at 59
temperature and turns off at 55
temperature.
The
°
temperature is 57
temperature is around 57+/-0.5
air is light enough to change so quickly
that it maintains relatively constant
average temperature that would prevent
wine bottle temperature from varying.
the
a. Move the air sensor away from the
evaporator
b. Deflect the supply air down
c. Lower setting
d. Call service for diagnosis
a. Check for voltage
b. Check compressor windings, start
relay and overload protector.
c. Check for condenser fan
d. Clean condenser
e. Call service for removing refrigerant
f.
Call service for OEM information
a. Check for insulation, gasket and
door opening
b. Check for excessive size
°
F,
°
F of air
°
F of air
average
air
F, and then the wine
°
F. The
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