Dometic CD20 Service Manual page 9

Refrigerators
Component
EN
Diagnostic Question
Door Assembly
Does the compressor run constantly or
turn on/off frequently?
Does the door seal and latch properly to
the unit?
Does the unit reach the appropriate
cooling temperature and/or is there
excessive frost inside the unit?
Does the door assembly still not function
properly after performing the above
diagnostic tests?
Does the unit not hold the set
temperature or does it warm too quickly?
Is the unit attempting to start, but then
stops?
Is the thermostat assembly red indicator
light flashing?
Action Based On Status
• Verify that the door seals and closes
properly.
• Adjust any door and/or seal issues as
needed.
• Verify that the door seals and closes
properly.
• Adjust any door and/or seal issues as
needed.
• For CR series models, verify that the
thermostat assembly is installed correctly.
• Adjust the thermostat assembly as
needed.
• Turn the dial to the coldest setting, and let
the unit run for fifteen minutes.
• Verify that the unit is cooling according to
the specified settings.
Replace the door assembly.
NTC Sensor
Ensure that the vent mechanism is not set to
the "vent" position.
• Verify that the sensor is properly
connected and powered.
• Fix any wiring and/or power issues as
needed.
• Check the thermostat assembly.
• Determine whether the red indicator light
is flashing in sequence.
Diagnostic Procedures
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