Advertisement
This Troubleshooting Chart is not prepared to replace the training required for a
professional refrigeration service person, not is it comprehensive.
Complaint
1. Unit not running
a.
b.
c.
d.
e.
f.
g.
h.
i.
a. Anti-short cycle
2. Unit not starting
and
temperature
rising high
3. Temperature
a. Air probe
fluctuating
a. Temperature setting high
4. Temperature
high, unit
stopping and
starting
normally
5. Temperature
a.
high, unit
stopping and
starting with
b.
short running
time
c.
a.
6. Temperature
high or not
cooling and
b.
running
c.
continually
d.
User's Troubleshooting
Possible Causes
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
Air
probe
touching
evaporator
coil,
displaying
temperature ok
Air probe in cold-air supply,
displaying temperature ok
Failed controller and probe
Improper cellar insulation &
seal
Cellar too large
Malfunctioning fans
Evaporator airflow
- 11 -
Response
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
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
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
a.
the
Move the air probe away from the
evaporator
b.
Move the air probe away from the
cold-air supply
c.
Call service for diagnosis
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
temperature
is
Advertisement
