Oven Ignitor Fails to Light – What Part Fixes This Problem?
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Understanding the Problem
Gas ovens use an ignitor (also called an igniter or glow bar) to heat up and open the gas valve so the burner lights. When the ignitor weakens or fails it won’t draw enough current or won’t glow hot enough to release gas, so the oven won’t light, will take very long to light, or will click repeatedly. A failing ignitor is one of the most common reasons a gas oven stops heating. It can be caused by normal wear, heat damage, or an electrical/wiring problem. Replacing the ignitor usually resolves the issue, but it’s important to confirm the ignitor is the cause before buying parts because similar symptoms can come from a bad gas valve, control board, or wiring.
Common Symptoms
Oven won’t light or takes a long time to light; ignitor does not glow or glows dimly; clicking or repeated attempts to light; burners that light inconsistently.
Common Causes
- Worn or weak hot-surface ignitor (common thermal wear over time)
- Broken wiring, bad connector, or faulty terminal block preventing sufficient current
- Gas safety valve or control board failing to provide or accept current (less common)
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at PartsDiscount.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
Confirm a weak ignitor by visually checking if the ignitor glows steadily when the oven attempts to light and by measuring its resistance with a multimeter—if it shows open or much higher-than-spec resistance it should be replaced.
Frequently Asked Questions
How do I test an oven ignitor?
First, disconnect power and access the ignitor. Visually check: a healthy hot-surface ignitor should glow bright orange when the oven tries to light. Use a multimeter to test for continuity/resistance—many ignitors measure roughly a few tens to a few hundred ohms (specs vary by model); an open circuit indicates failure. For a live test (advanced): measure the current draw during a start cycle — a working ignitor typically draws several amps (consult your model spec). If it doesn't glow or the resistance is far out of spec, replace it.
Can I replace the ignitor myself and how hard is it?
Yes, many homeowners can replace an ignitor. Basic steps: shut off power to the appliance, turn off the gas supply, remove the oven door or lower panel to access the ignitor, disconnect the wiring and remove the mounting screws, swap in the new ignitor, reconnect wiring, restore power and gas, and test. If you’re not comfortable working with gas or electrical components, or if testing points to the gas valve or control board, hire a qualified technician.
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