Troubleshooting - Vinotemp WINE-MATE WM1500 HTD-TE Use And Care Manual

This Troubleshooting Chart is not prepared to replace the training required for a
professional refrigeration service person, not is it comprehensive
Complaint
a. Power cord unplugged
1. Unit not
b. No power to unit
running
c. Setting
d. Differential too high
e. Incorrect or loose wirings
f.
g. Defrost light blinking
h. Compressor light blinking
a. air
2. Cabinet
temperature
high, unit
b. Short circuit of air flow between
stopping
and starting
c. Setting too high
d. Failed
with short
running time
a. Incorrect voltage
3. Temperature
b. Failed thermistor
high,
compressor
c. Failed components
stopping
and starting
d. Improper condenser airflow
e. Dirty condenser
but very
f.
short
g. Discharge or suction pressure
running time
a. Improper room insulation & seal
4. Temperature
high or not
b. Room too large
cooling and
c. Ambient temperature too high
running
d. Exhaust restricted
continually;
"HA" alarm
blinking and
e. Malfunctioning fans
beeping
f.
g. Dirty Condenser
h. Iced evaporator
i.
j.
k. Undercharge or overcharge

Troubleshooting

Possible Causes
higher than
temperature
Low voltage
sensor touching
evaporator coil, displaying
temperature ok
supply and return air
temperature controller
and thermistor
Overcharge of refrigerant
too high
Improper evaporator
condenser airflow
Refrigeration system restriction
Refrigerant leak
- 16 -
Response
a. Check for power cord plug
b. Check power at receptacle & fuses
ambient c. Lower temperature setting
d. Decrease the value as to 4
e. Check all wirings and connections
f. Contact an authorized electrician
g. Unit is under defrost mode
h. Unit waits for anti-short cycle delay
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 thermistor by placing it in ice
water and measuring resistance
c. Check compressor windings, start
relay and overload protector.
d. Check for condenser fan
e. Clean condenser
f. Call service for removing refrigerant
g. Call service for OEM information
a. Check for insulation, gasket and
door opening
b. Check for excessive size
c. Check for installation location
d. Leave minimum required clearance
for the exhaust side and leave
minimum required clearance for the
fresh air intake side
e. Check for both evaporator and
condenser fans
or f. Check for air restrictions, air short-
circulation, grille directions
g. Clean condenser
h. Defrost and reset temperature
i. Call service
restrictions
j. Call service for checking loss of
refrigerant
k. Call service to add or remove
refrigerant
°
F
for checking