High Voltage Cable; Electrode; Dc Relay - Dometic RM2351 Diagnostic Service Manual

this is an energized circuit. Shock can occur
if not tested properly. testing is to be done
by a qualified service technician.
This insures that the flame will always be lit when de-
sired. First verify proper voltage at the positive (Yellow
+) and ground (Black –) terminals of the igniter. The read-
ing should be within 1.5 volt of incoming voltage at the
main terminal block during trial-for-ignition. Next, remove
the high voltage cable from the igniter. The igniter should
produce a sparking sound during trial-for-ignition. If not,
replace the igniter. While operation is in the gas mode, the
power module and igniter are constantly monitoring the
presence of flame. If the flame is blown out, the reignitor
will immediately start sparking. When the power module
senses the loss of flame (thermocouple voltage below 13
MVDC) the 45 seconds trial for ignition period is start-
ed. The igniter installed on the refrigerators as original
equipment is part number 2931132019 (RV Gas Model
679). This igniter is rated 50 MA. This igniter may also be
used on any other model. When replacing the igniter al-
ways provide the product number for proper replacement.
do not install the Channel Mark 6, Model 12 E igniter
(shown below) as a service replacement part. Installation
of the Channel Products, Inc., Gasliter Mark 6, Model 12
E, will VOID the Warranty on the refrigerator. To acquire
the proper igniter always provide the product number.

5.5 High Voltage cable

If sparking starts during trial-for-ignition, the cable is good.
If there is no sparking during trial-for-ignition, disconnect
DC power at the refrigerator terminal block or switch unit
off. Disconnect high voltage cable from electrode. Re-
connect DC power. If there is a sparking sound from the
igniter during trial-for-ignition, then replace high voltage
cable or electrode. On newer units the electrode and high
voltage cable are integrated into one component.

5.6 electrode

Do a visual check for cracks or breaks on the ceramic insu-
lator. A hair line crack can be hard to see at the electrode.
The spark gap must be set at three-sixteenths (3/16") of
an inch and tip of electrode above the slots in the burner.
When adjusting always loosen the screw and move into
place, never try to move without loosing the screw. On
newer units the electrode and high voltage cable are in-
tegrated into one component. To acquire the proper part
always provide the product number.

5.7 dc relay

The relay controls the circuit to the DC heating ele-
ment. The load (amps) of the DC heating element goes
through the relay. Only used on newer 3 way units or
units that have the UNIVERSAL POWER MODULE KIT
(3308742.000) installed.
(+) 12 Vdc
Heater ele-
ment Wire
Verify that the following components are good: upper cir-
cuit board, thermistor, 5 or 6 wire harness and 30/3-amp
fuses. In the DC mode Plug 3, Terminal 4 (positive 86)
and Terminal 3 (negative 85) should have voltage to close
the relay. If no voltage in the DC mode change the lower
board.
12
P3 Harness
Blue Wire
85
red Battery
87
Wire
30
86
P3 Harness
Blue Wire