GE Monogram ZDP30_ _H, Technical Service Manual

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Spark Module
All 36-in. and 48-in. models have a single spark
module located behind the manifold/valve panel.
To remove the module:
1. Remove the manifold/valve panel (see
Component Access
).
2. Remove the screws at the upper-right and
lower-left corners of the module.
3. Pull the module up and out.
30-in. Range Models
30-in. range models have a single spark module
located in the center of the burner box.
To remove the module:
1. Remove the burner grates.
2. Lift off the center trim from the burner
maintop.
3. Remove the 2 screws at the front and rear of
the air duct cover, and remove the cover.
4. Remove the 2 screws securing the spark
module to the range.
Spark Module
Grill Burner/Griddle Burner Ignition
Systems
(On Some Models)
The grill burner and griddle burner are ignited by
Norton style glowbar ignition systems. The ignition
circuit consists of the grill switch (grill burner
only), griddle thermostat (griddle burner only), the
igniter and the thermal/safety valve (gas valve).
The components are wired in series for each
cooking function.
Note: The igniter resistance decreases as the
igniter surface temperature increases. The safety
valve operates by current, not by voltage.
From a cold start, the igniter needs 30–60
seconds, with voltage applied, to reduce its
electrical resistance enough to provide a
minimum of 3.2 - 3.6 amps of current flow in the
series circuit. This is the required current flow
needed for the safety valve to open and supply
gas to the burner.
The glowbar should provide a steady current flow
of 3.2 to 3.6 amps flowing in the circuit. At that
point, the igniter temperature is between 1800°F
and 2500°F. The igniter will remain energized at all
times during burner operation. If the igniter glows
red but does not draw at least 3.2 - 3.6 amps, the
fault is usually with the igniter, not the valve.
36-in. Model Shown