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Contributor
43 Answers
- Posted on May 11, 2009
Re: New stove gas is flowin but electrodes wont ignite...
- Where starting is manual (there is a 'start' position on the control(s), a
set of switch contacts on the control(s) provides power to the ignition
module.
- A problem of no spark with only one control indicates that the fault is
with it or its wiring.
- A problem with continuous sparking even with all the controls off or in
their normal positions indicates a short - either due to a defective switch
in one of the controls or contamination (e.g., spilled liquid) bypassing
the switch contacts.
- Where starting is automatic, an electronic sensor, thermocouple, or bimetal
switch provides power to the ignition module as needed.
Before you blame the ignition module for either lack of spark or continuous
spark, make sure the wiring is in good condition and completely dry and clean
( or reasonably clean). Confirm that proper voltage is reaching the module
with a multimeter or neon test lamp. The modules are quite robust:
- Any liquid that may have dripped into the module may result in temporary or
permanent failure. Fortunately it may be
possible to pop off the bottom cover (with power OFF or the module removed!)
and clean it. The most likely failure would be the SCR if you are into
component level repair. Else, just replace it.
- WARNING: There are several capacitors inside that may be charged to as much
as 300 volts. The charge they can hold is probably not dangerous but may be
painful or startling. Discharge these before touching anything inside or
attempting to check components. Use a screwdriver blade or test clips and
then confirm that they are discharged with a multimeter.
- Contamination of the controls from spilled liquid may result in continuous activation of the ignition module since any
electrical leakage across the switch contacts will likely be enough to
activate it. Remove the control panel cover
and dry it out or unplug the range or oven for a couple of days. If the
contamination is not just plain water, it is a good idea to clean it
thoroughly to prevent future problems.
- Spills into the area of the electrodes at the gas burner assembly may short
out the ignition for ALL the burners since they probably use the same module.
Again, clean and dry it out or let it dry out on its own (if just water).
These are solutions for standard modules and replacements should be available from
your local appliance repair shop or parts supplier. An exact mechanical match
is not needed as long as the specifications are compatible.
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