Dometic CD20 Service Manual

8
EN
Diagnostic Procedures Refrigerators
Component Diagnostic Question Action Based On Status Page
Condenser Fan
Is the condenser fan receiving power
from the control module?
• Manually test the condenser fan to ensure
that it works correctly.
• Ensure that the control module is properly
wired to send power to the fan.
• Correct any wiring issues as needed.
6
Does the condenser fan make loud
or uncharacteristic sounds, such as
humming?
• Verify that the fan is clean and that it
moves freely without obstruction.
• Clean the fan and remove any debris as
needed.
23
Does the condenser fan still not function
properly aer performing the above
diagnostic tests?
• Manually test the condenser fan to ensure
that it works correctly.
Replace the condenser fan.
17
Control Module
Is the control module properly connected
to and receiving supply power?
• Ensure that the module is properly
connected and receiving power from the
12 VDC or 24 VDC supply circuit.
• Correct any power issues as needed.
12
Is the polarity correct? • Ensure that the module positive and
negative inputs are correctly wired.
• Correct any polarity issues as needed.
6
NOTICE: Reversed polarity can blow fuses and might cause damage the control module.
Is the control module receiving a run
signal?
• Place a jumper wire on the C and T
terminals of the control module to verify
that the run signal is being received.
• Correct any wiring issues as needed.
6
Are all other wiring connections correct? • Ensure that the control module inputs and
outputs are correctly wired.
• Correct any wiring issues as needed.
6
Are the LED lights on the thermostat
assembly illuminated or flashing?
• Verify whether the LED lights on the
thermostat assembly are flashing.
• Correct any issues as needed.
10
Does the control module still not function
properly aer performing the above
diagnostic tests?
Replace the control module. 13

Dometic CD20 Specifications

General

Brand	Dometic
Model	CD20
Category	Refrigerator
Language	English