Quick Answer: Why Your KitchenAid Oven Igniter Glows But Will Not Light#
Most likely: the igniter is weak. On a KitchenAid gas oven (built on the Whirlpool platform) the igniter and gas valve are wired in series, and the valve only opens once enough CURRENT flows through the circuit — not when the igniter merely looks hot. As a silicon-carbide igniter ages it micro-cracks, its resistance climbs, and the current falls below the roughly 3.2 to 3.6 amps needed to trip the valve open, so you see a glow but never a flame. A failed gas valve or a board not sending voltage are far rarer. Do not leave gas flowing to an oven that will not light.
Likely Causes at a Glance#
| Cause | Likelihood | What to check |
|---|---|---|
| Weak igniter (draws too little current) | Most likely | amp draw below about 3 amps once it glows |
| Gas valve safety mechanism failed | Rare | igniter draws full current but no gas flows |
| Control board not sending voltage | Rare | igniter does not glow at all; check for line voltage |
Do You Have the Right Tools?
Combustion analyzer ($300), igniter tester ($120), temperature calibrator ($150), and gas pressure manometer. Our technician arrives with $3,000+ in professional tools — your diagnostic is free.
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Walking Through the Diagnosis#
First, safety: if you smell gas, shut off the supply and ventilate before doing anything, because an igniter that glows without lighting is releasing unburned gas. Close the gas valve behind the range (Sacramento and Bay Area homeowners on PG&E should know where it is) and unplug the range before you open it.
The key is that the igniter and the gas valve share one series circuit. The valve is a bimetal safety device that opens on current, so a tired igniter can glow visibly yet still not pull enough amps to open it. The definitive test is amp draw: with the oven set to Bake, clamp an ammeter on one igniter wire, and if it draws less than about 3 amps after ninety seconds of glowing, it is too weak to open the valve. A quicker field check is timing — a healthy igniter lights the gas within roughly thirty to forty-five seconds of glowing, so anything past ninety seconds, or a glow that never lights, means a weak igniter. A cold resistance reading is the least reliable test, since many igniters measure fine cold but fail to draw current when hot.
Replace a weak igniter with the correct platform part (the flat-style Whirlpool W10918546 covers most models), and handle it carefully: silicon carbide is brittle and cracks with a bump, and skin oils create hot spots, so never touch the element with bare hands. Shut the gas, unplug, pull the oven bottom, disconnect the two-pin connector, and swap the igniter on its bracket.
If the igniter is confirmed strong (it draws full current) but gas still does not flow, the gas valve's safety mechanism has failed — uncommon, since it is a robust device, but possible after many years. And if the igniter does not glow AT ALL, that is a different problem: check for line voltage at the igniter connector with the oven set to Bake, and no voltage points to the board or wiring rather than the igniter. Never bypass the series safety circuit to force gas — it exists to stop unburned gas from escaping.
Repair or Replace? The Short Version#
Rule of thumb: if the repair comes in under about half the price of a comparable new oven and yours is under eight to ten years old, repair it — the igniter is an inexpensive, common part and the single most likely fix here. Because KitchenAid rides the Whirlpool platform, cross-reference the KitchenAid-branded igniter against the equivalent Whirlpool number, which is often cheaper for the same part. Our technicians carry the platform igniters and confirm the weak draw with an ammeter first — book a repair.
Safety First — Know the Risks
Gas ovens involve live gas lines — a loose connection creates explosion and carbon monoxide risk. Electric ovens run on 240V circuits. Our techs are licensed and insured — let them handle the risk.
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Frequently Asked Questions#
My KitchenAid oven igniter glows but the gas never lights — what is wrong?#
The igniter is almost certainly weak. It still glows but no longer draws enough current to open the series-wired gas valve, so no gas flows. An amp-draw test confirms it, and replacing the igniter fixes it.
How do I know if the igniter is weak without special tools?#
Time it. A healthy igniter lights the gas within about thirty to forty-five seconds of starting to glow, so if it glows past ninety seconds or never lights, it is too weak. An amp-draw reading below about 3 amps is the definitive confirmation.
Could it be the gas valve instead of the igniter?#
Rarely. If the igniter is confirmed to draw full current and gas still will not flow, the valve's safety mechanism has failed — but that is uncommon, and the weak igniter is the usual culprit by a wide margin.
Why should I not touch the new igniter with bare hands?#
Silicon-carbide igniters are brittle and sensitive: a bump can crack the element, and skin oils leave hot spots that shorten its life. Handle it by the bracket and set it carefully.
Appliance Repair Technician · 11 years experience
Experienced technician with 11 years specializing in Frigidaire and Electrolux refrigerator and dryer repair with a focus on safety.
