Upper Control Module; Ventilator Fan/Switch; Water Valve - Dometic DM2652 Service Manual

Diagnostic Procedures
Component
24
Diagnostic Question

Upper Control Module

Is the refrigerator not operating but the
interior light is on?
Does the refrigerator operate in electric
mode but not in gas mode?
Does the refrigerator operate in gas
mode but not in electric mode?
Is the refrigerator not operating and the
interior light not on? (Americana models
only)
Is the refrigerator not operating and the
interior light not on? (New Generation
models only)

Ventilator Fan/Switch

Is the refrigerator or freezer not cold
enough in any operating mode?
Does the ice maker not produce ice?
Action Based On Status
Confirm the mode or switch is set correctly.
Confirm the mode or switch is set correctly.
1. Confirm that the voltage between the
red (negative) and orange (positive) wires
connected at P1 is between 10.5–
13.5 VDC.
2. If the voltage is within specification,
replace the upper control module.
1. Confirm that the voltage between the
red (positive) and black (negative) wires
on the communication wire harness is
between 10.5–18 VDC.
2. If the voltage is within specification,
replace the upper control module.
1. Confirm that the temperature at the
ventilator fan switch is within the range
that will activate the ventilator fan.
Installation location varies by model
I
and installer. The temperature range for
activation varies by model.
2. If the temperature is within specification,
does the fan switch close the circuit?
3. If the circuit does not close, replace the
fan switch.
4. If the circuit closes, but the fan does not
activate, confirm that the voltage supplied
to the fan is between 10.5–22 VDC.
5. If the voltage is within specification,
replace the fan.

Water Valve

1. Confirm that the water supply to the
ice maker is turned on and there are no
breaks in the water line from the water
valve to the ice maker.
2. Confirm the resistance on the water valve
solenoid is within specification.
3. If the resistance is out of specification,
replace the water valve.
Americana and New Generation Refrigerators
Page
N/A
N/A
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EN