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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
1. Unit not running
2. Unit not starting,
but temperature
rising high
3. Temperature
fluctuating
4. Temperature
high, unit
stopping and
starting
normally
5. Temperature
high, unit
stopping and
starting with
short running
time
Troubleshooting
Possible Causes
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.
Cut-in too high
g.
Defrost light blinking
h. Compressor light blinking
i.
Defective controller
a. Anti-short cycle
a. Air probe
a.
Temperature setting high
a.
Air
probe
touching
evaporator
coil,
temperature ok
b. Short circuit of air flow between
cold-air supply and cellar-air
return, displaying temperature
ok
c.
Failed controller and probe
- 17 -
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.
Reduce Hy
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
4F, the cooling unit turns on at 59
air temperature (It may be higher than
°
59
F if it is in anti-short cycle or defrost
cycle) and turns off at 55
temperature.
temperature is 57
temperature is around 57+/-0.5
air is light enough to change so quickly
that it maintains relatively constant
average
prevent wine bottle temperature from
fluctuating.
a.
Lower the setting
the
a.
Move the air probe away from the
displaying
evaporator
b. Deflect the supply air down
c.
Call service for diagnosis
Response
°
F with the differential
°
F of
°
F of air
The
average
air
°
F, and then the wine
°
F. The
temperature
that
would
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