Error-Based Diagnostics - Dometic DM2652 Service Manual

Americana and New Generation Refrigerators

6.1 Error-Based Diagnostics

Refer to the following tables to diagnose system errors
for the Americana and New Generation models covered
in this service manual.
6.1.1 Americana
Americana models have a check indicator lamp on the
control panel that illuminates to indicate operational
errors.
Fault Description
The check indicator lamp is on.
6.1.2 New Generation
New Generation models (except for model DMR702)
display an error code to indicate operational errors.
EN
Possible Cause
The gas pressure is too low or
absent.
The knob on the gas valve has
been turned to the off or closed
position.
The gas valve solenoid is
defective.
The DC voltage is too low.
There is a loose or weak ground.
There is a short or a failed circuit in
the lower control module.
The thermocouple is defective.
The re-igniter is not creating a
spark.
The electrode is not functioning
properly.
The orifice is blocked or
incorrectly sized.
The burner is blocked.
The altitude is affecting the
operation of the refrigerator in gas
mode.
Recommended Action
Perform a diagnosis on the gas supply.
Perform a diagnostic on the gas valve.
Perform a diagnostic on the DC voltage supplied
to the lower control module.
Perform a diagnostic on the DC voltage supplied
to the gas valve.
Clean or tighten the ground connections for
the lower control module, gas valve, and RV
converter as needed. Strip back the wiring and
make new connections as needed.
Perform a diagnostic on the lower control
module.
Perform a diagnostic on the thermocouple.
Perform a diagnostic on the re-igniter.
Perform a diagnostic on the electrode.
Perform a diagnostic on the orifice.
Perform a diagnostic on the burner assembly.
Perform a diagnostic for altitude issues.
The DMR702 model has three thermostat range setting
lights used to indicate where the temperature is set.
A light or combination of lights will flash to indicate
operational errors.
Diagnostic Procedures
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