High Voltage Cable - Dometic RM3604 Service Manual

HIGH VOLTAGE CABLE

NOTE: Be sure switch and igniter are good before
checking the high voltage cable and the switch is in the
gas mode.
To check the high voltage cable, first disconnect DC
power at the terminal block. Next, disconnect high
voltage cable from electrode. Then reconnect DC power
to the terminal block. If sparking starts, cable is good,
DO NOT REPLACE, check the electrode. If no sparking,
disconnect DC power at the terminal block and then
disconnect high voltage cable at the igniter. Reconnect
DC power to the
terminal block. If
sparking sound from
igniter, replace the high
voltage cable.
Next, disconnect DC power at the terminal block. Remove
high voltage cable from igniter. Reconnect DC power, the
igniter should produce a sparking sound. If not, replace the
igniter.
ON MODEL RM2510, 2604, 2610 AND 2804, 2810: Next,
with the igniter producing spark, set the meter on 20 volts
DC or lower scale, connect meter leads to L and ground
terminals on the igniter. The meter should read a pulsating
voltage. If not, replace the igniter.
If all of the previous checks are correct, the igniter is good,
DO NOT REPLACE. The pulsating voltage allows a lamp
to illuminate on the front of the refrigerator to advise the
customer spark has been produced. To check the lamp,
first, verify it is wired correctly. Next, verify the lamp
receptacle is receiving the signal, if so, and lamp is not
illuminating (flashing), replace the lamp.
NOTE: Do not supply DC power to the lamp. It will NOT
illuminate with normal DC power. For the lamp to illuminate
it must receive an increased DC signal.
13C. SWITCH (TOP MOUNT CONTROLS)
The Selector Switch should be checked for continuity in the
following manner. Remove all wires from the assembly.
For the DC Mode (3-Way Models ONLY), continuity should
exist between terminals 5 and 5a and 6 and 6a.
For the AC Mode, continuity should exist between termi-
nals 1 and 1a and 2 and 2a.
For the Gas Mode (on refrigerators equipped with auto-
matic reignitors ONLY), continuity should exist between
terminals 4 and 4a.
RM2452/RM2453/RM2552/RM2553 SWITCH
14C. DC COMPONENTS
SWITCH
This is the switch that selects the mode of operation
HIGH VOLTAGE
(120 volt AC, gas and 12 volt DC). It is also a circuit
interrupter for each mode of operation on the refrigera-
tor. When the customer selects either AC, gas or DC (3-
way models only) operation, the selector switch directs
electricity first to the interior light and the thermostat and
on to the heating element or the igniter for gas mode.
When this switch is turned off, the AC or DC circuit is
interrupted. To check the switch in the AC mode,
continuity should exist between these terminals: 1 to 1A,
2 to 2A and 7 to 7A. To check the switch in the gas
mode, continuity should exist between these terminals: 4
to 4A and 7 to 7A.
To check the switch in the DC mode (on 3-way
models only), continuity should exist between these
terminals: 5 to 5A, 6 to 6A and 7 to 7A.
NOTE: To do a continuity check, first be sure all
power is disconnected or off to the refrigerator. Second,
remove all wires from the switch. After the check, be
sure switch is wired properly per the wiring diagram.
When the switch is in the off position a continuity reading
SHOULD NOT be indicated on any terminals. If the
above test results are correct, DO NOT REPLACE the
switch. If any one of the above tests are not correct
REPLACE the switch.
Interior Light
Circuit
Dometic
+Term.Ign.Lamp Term. Block
Thermostat
DC Mode
Gas Mode
AC Mode
6 5
7
7 6 5 4 2 1
7a 6a
2a 1a
7a 6a 5a 4a
AC Mode
Gas Mode
#30 Term.on Relay (+
DC Mode
Interior Light Circuit #86 Term. on
Door Switch
®
MANUAL
Refrigerators
+Term. on Igniter
AC line
AC Neutral
4 2 1
5a 4a 2a 1a
AC Heater
Thermostat
+Reigniter-Lamp Term.
35