Diagnostic Procedures - Dometic D21 Service Manual

Range
Term
This component senses the pilot flame for
Thermocouple the oven and controls the safety valve and
oven thermostat.
A meter used for reading voltage and
Volt Meter
Ohm resistance.
Term used to describe a burner flame
with excessive yellow tipping. The yellow
Yellow Tipping tipping can be caused by an improper
gas/air mixture due to improper burner
alignment or restriction of the orifice.
Component
EN
Definition
Diagnostic Question
12 VDC Ignition Module (D21 Model Only)
Does the burner fail to ignite when the
control knob is turned?
Inspect the ignition module. Is there
visible damage?
Does the range make a rattling sound
during operation?

5 Diagnostic Procedures


WARNING: ELECTRICAL SHOCK, FIRE,
EXPLOSION, AND/OR CARBON MONOXIDE
HAZARD. Failure to obey the following
warnings could result in death or serious injury.
– Use only Dometic replacement parts and
components, which are specifically approved for
use with the appliance.
– Do not use matches, candles, or other sources of
ignition to test fittings and gas lines for leaks.
This section has information to help you identify various
range operational issues by diagnosing individual
component parts.
Remember to check the basics before replacing any
parts, such as loose wiring and overall Installation issues.
Refer to the Maintenance (on page 26) and Installation
Issues (on page 18) sections for more detail.
Action Based On Status
• Test the ignition at the burner:
1. Turn one control knob.
2. Watch for a spark at the burner.
3. Repeat for each control knob.
• Test the module using a volt meter.
• Clean the burner.
• Check the gas pressure.
If damage is observed, replace the component (visit
www.eDometic.com for service kit information and
www.dometic.com for installation details).
Burner Box
Confirm the mounting screws are in place. If the screws
are loose, tighten until secure.
General Information
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