Dometic Manual Refrigerator Diagnostic Service Manual - WebRing

(40)
The most efficient way to diagnose the gas
system would be to first connect the gas
manometer to the pressure test point. With the
thermostat set at maximum you must have 11
to 12 inches water column pressure for the
refrigerator to operate properly. If your
manometer reads higher than 11 to 12 inches
water column pressure, the tank regulator is
adjusted to high, readjust it. Make sure the
gas system has at least 50% of the coach’s LP
appliances on at the time the system is being
adjusted. If the manometer reads 11 inches, the
problem of no cooling lies in the burner
assembly, flue pipe or venting.
(41)
If you have less than 11 inches water column
pressure, the next step would be to remove the
by-pass screw.
NOTE: The by-pass screw
reduces the pressure and
volume of gas to the burner.
(42)
Shut off gas supply at the back of the refrigerator.
Remove the by-pass screw from the top of
the thermostat,
Use a by-pass screw that does not have the
small O-ring at the bottom. Reinstall this bypass
screw into the thermostat.
D-6-14