Installation Issues; Gas Pressure Issue; Negative Air Draft Issue; Structure Issue - Dometic D21 Service Manual

Installation Issues

6 Installation Issues

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.
A majority of range problems are caused by issues
outside the product itself. When diagnosing a range
problem, always check the issues described in this
section before replacing components.
Operational Issue
• The pilot will not light or
stay lit.
• The burner(s) will not
light or stay lit.
• The burner(s) light but
the flame is too low.
• There is a constant gas
smell present.
• Burner(s) will not light or
stay lit
• Oven does not cook to
temperature
• Cooktop is warped or
blistered
• Burner melt down
Oven does not cook to
temperature
Ignition system fails to
function

6.1 Gas Pressure Issue

Check that the gas pressure is set at a minimum of 11-in.
W.C. (at the range), with a minimum of 50% (ideally
100%) of other gas-fired appliances operating while
the range is in operation. The pressure should be
tested using a U-tube manometer. If using a digital-type
manometer, calibrate it often with a U-tube manometer.
Check the outside air temperature. As the air gets colder,
it reduces the capacity of liquid propane (LP) and the gas
pressure is affected by a combination of the fill level of
the LP tanks and the ambient temperature outside.
18
Potential Issue Page
Gas pressure issue 18
Negative air draft 18
issue

Structure issue

18

Power issue

18
To raise the tank temperature and increase the capacity
of the tank:
1. Place an insulated, fire-resistant blanket over the tanks.
2. Place an illuminated 75 W light bulb under the
blanket.
The temperature of the bottle should rise 10–20 °F [(-12)–
(-7) °C] over a brief period of time, which increases tank
capacity.

6.2 Negative Air Draft Issue

Negative draft is caused by air moving across the range
that blows out the burner flame or moves the flame into
the range, resulting in damage.
Operating the range in excessively windy conditions may
blow out the top burner flame during use and cause a
negative draft.
The range must be completely separated and/or sealed
from other air moving or air-consuming devices such as,
but not limited to, furnaces, microwave ovens, clothes
dryers, cooling fans, and doors or drawers in common
cabinets.
6.3 Structure Issue
Specific cabinet dimensions and clearances are required
during the installation of the range. If the requirements
are not met, the range may not operate properly. Check
the installation manual for the appliance to find the
proper dimensions.
6.4 Power Issue
If the range is experiencing a source issue from the
power supply of the coach, the fix is not related to the
range and could be the result of a converter issue.
Use a digital or analog volt meter to take voltage
readings. Confirm the voltage to the range is between
10.5 and 13.5 VDC during operation, testing with the
interior lights both ON and OFF.
This check should be made using the battery, converter,
or generator, where applicable. Do not use a test light,
as it does not provide enough useful information for a
proper diagnosis.
Range
EN