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Troubleshooting – Vinotemp WM 2500SSH User Manual

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Troubleshooting


This Troubleshooting Chart is not prepared to replace the training required for a
professional refrigeration service person, not is it comprehensive

Troubleshooting Chart

Complaint Possible

Causes

Response

1. Unit not running

a. Power cord unplugged
b. No power to unit
c. Temperature

setting

high

d. Low

voltage.

e. Incorrect or loose wirings.
f. Defrost

light

blinking

g. Running light blinking

a. Check for power cord plug
b. Check power at receptacle & fuses
c. Lower

temperature

setting

d. Contact an authorized electrician
e. Check all wirings and connections
f. Under

defrost

g. Call service for failed components

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. Call service for removing refrigerant
h. Call service for OEM 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. Call service for OEM 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. Call service for checking 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. Call service for checking restrictions

6. Temperature too high 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

installation

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