Troubleshooting; Possible Causes And Solutions - Cornelius COR5014UBCSD Service Manual

COR5014UBCSD Service Manual
T
ROUBLESHOOTING

Possible causes and solutions

PROBLEM
COMPRESSOR WILL NOT
START
THE TEMPERATURE IS TOO
COLD
THE TEMPERATURE IS NOT
COLD ENOUGH
Publication Number: 630460277SER
POSSIBLE CAUSE
No voltage in the electrical
socket.
The electrical conductor or
wires may be cut.
Defective electrical
components such as:
thermostat, relay, thermal
protector, etc.
Thermostat in "off" position.
Compressor motor has a
winding open or shorted.
Dirty condenser; lack of air
flow.
Low voltage.
Compressor is stuck.
Thermostat knob is set at a
very cold position.
Thermostat does not
disconnect the condensing unit.
Thermostat capillary bulb is
loose or installed improperly.
Thermostat knob is set at a
very warm position.
Condenser is dirty; lack of air
flow.
The refrigerator has been
placed at an inadequate
location.
- 6 -
SOLUTION
Use a voltmeter to check the
voltage.
Use an ohmmeter to check for
continuity.
Replace defective components.
Turn the thermostat's knob to
its maximum position and wait
to see if the compressor starts.
Measure the ohmic resistance
of the main and auxiliary
windings using an ohmmeter.
Compare them with the correct
values.
Clean condenser and allow for
air circulation.
Use a voltage regulator if the
voltage is lower than 103 volts.
Change the compressor.
Set the thermostat knob to a
warmer position and check if
the compressor stops
according to the thermostat's
operating range.
Check the insulation of the
thermostat. If the problem
persists, change the
thermostat.
Correctly fasten the thermostat
capillary bulb.
Set the thermostat knob to a
colder position.
Clean the condenser and allow
for air circulation.
The unit must not be near
stoves, walls that are exposed
to the sun, or places that lack
sufficient air flow.
© 2004, IMI Cornelius Inc.