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5.10 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 the
unit off. Disconnect the high voltage cable from the elec-
trode. Reconnect DC power. If there is a sparking sound
from the ignition control module during trial-for-ignition,
then replace high voltage cable or electrode. On certain
units the electrode and high voltage cable are integrated
into one component. To acquire the proper part always
provide the product number of the model refrigerator you
are working on.
5.9 Electrode
Do a visual check for cracks, breaks or moisture on the
ceramic insulator. A hair line crack can be hard to see at
the electrode. The spark gap must be set at three six-
teenths (3/16”) of an inch between the tip of the electrode
and the slots in the burner. When adjusting, always loosen
the screw and move into place. Never try to move without
loosening the screw. On certain units the electrode and
high voltage cable are integrated in to one component. To
acquire the proper part always provide the product num-
ber of the model refrigerator you are working on.
This is an energized circuit. Shock can occur
if not tested properly. Testing is to be done
by a qualied service technician.
5.8 Ignition Control Module
The ignition control module supplies continuous DC volt-
age to the gas valve during gas operation. On gas op-
eration the ignition control module senses the resistance
through the ame between the electrode and burner.
When there is no ame at the burner, the resistance is
high and the ignition control module begins sparking to
light the burner. As soon as the ame is lit, the resistance
between the electrode and burner drops and the ignition
control module stops sparking. The resistance is moni-
tored by the ignition control module and, if for any reason
the ame goes out, the ignition control module begins
sparking until the burner is lit. The resistance between
the electrode and burner drops and the ignition module
stops sparking. This insures that the ame will always be
lit when desired. First verify proper voltage at the Yellow
(+) and White (–) terminals on the 4-pin connector of the
ignition control module. This reading should be 8.5 volts
DC or greater. Next, remove the high voltage cable from
the ignition control module. The ignition control module
should produce a sparking sound, during trial-for-ignition.
If not, replace the ignition control module. While operation
in the gas mode, the ignition control module is constantly
monitoring the presence of ame. If the ame is blown out,
the ignition control module will immediately start sparking.
When the ignition control module senses the loss of ame
(High resistance thru the electrode) the 45 seconds trial
for ignition period is started.
The ignition control module has an additional ground strip
wire underneath the left mounting tag. This wire must be
in good contact with the metal frame of the burner as-
sembly before the system is energized. Otherwise both
the ignition control module and the power module may be
damaged. At every gas operation request from the power
module, the ignition control module performs an integrity
test of the gas burning system. This test will detect if the
system is operable or not. A message code will result in
a lock out mode. “ch LP” will be displayed on the front
display panel.
Note: The message “ch LP”, for safety reasons will re-
main until the power is switched “OFF” and then “ON”.
High voltage cable
to electrode
Power leads
to gas valve
Leads from the
main control board
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