Vinotemp WINE-MATE WM-3500HZD, Service Manual

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III. Troubleshooting Chart
This Troubleshooting Chart is not prepared to replace the training required for a
professional refrigeration service person, not is it comprehensive.
Table 3-1 Troubleshooting Chart
Complaint Possible Causes Response
1. Unit not running
a. Power cord unplugged
b. No power to unit.
c. Incorrect Temperature setting
d. Low
voltage
e. Incorrect or loose wirings
f. Failed components.
a. Check for power cord plug
b. Check power at receptacle& fuses
c. Check for temperature setting
d. Contact an authorized electrician
e. Check all wirings and connections
f. Check start relay, start capacitor,
overload protector, compressor. Fans.
2. Compressor stopping and starting but short running time
a. Incorrect temperature setting
b. Incorrect
voltage
c. Failed thermistor
d. Failed
components
e. Improper
condenser airflow
f. Dirty condenser
g. Overcharge of refrigerant
h. Discharge or suction pressure too
high
a. Set 55 to 60
°
F
b. Check for voltage
c. Check thermistor by placing it in ice
water and measuring resistance
d. Check compressor windings, start relay
and overload protector.
e. Check for condenser fan
f. Clean
condenser
g. Remove refrigerant
h. Refer to OEM service information
3. Fan motor running but compressor not running
a. Incorrect power supply
b. Incorrect or loose wirings
c. Failed
components
d.
Liquid refrigerant in the
compressor
a. Check for proper voltage
b. Check all wirings and connections
c. Check start relay, start capacitor,
overload protector, compressor.
d. Refer to OEM service information.
4. Compressor running but fan not running
a. Fan blade bond
b. Incorrect or loose wirings
c. Failed
motors
a. Check for proper clearance
b. Check all wirings
c. Check for open or shorted windings
5. No cooling but compressor and fan running
a. Evaporator airflow restriction
b. Refrigerant
leakage
c. Refrigeration system restriction
a. Check for airflow through evaporator
b. Check for loss of refrigerant
c. Check for restrictions
6. Insufficient cooling or unit running too long
a. Improper evaporator or condenser
airflow
b. Dirty Condenser
c. Iced evaporator
d. Malfunctioning fans
e. Improper seals
f. Improper area to be cooled
a. Check for air restrictions
b. Clean
condenser
c. Defrost and reset temperature
d. Check for both fans
e. Check for gasket and door opening
f. Check for excessive load incorrect
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