If your gas oven won’t heat but you can see the igniter glowing, it may seem like the igniter is working properly. Surprisingly, a glowing igniter is often still the problem.
Many homeowners replace expensive parts before realizing a weak igniter is one of the most common causes of a gas oven that won’t light.
- Weak Igniter
An igniter can glow orange and still fail.
Over time, igniters weaken and can no longer draw enough current to open the gas safety valve.
Common signs:
- Igniter glows but burner never lights
- Long delay before ignition
- Oven heats inconsistently
- Dirty Burner Tube
Food spills and grease can block gas flow.
Inspect the burner tube for:
- Grease buildup
- Food debris
- Rust or corrosion
A partially blocked burner may prevent proper ignition.
- Faulty Gas Safety Valve
The safety valve works with the igniter.
If the valve fails, gas may never reach the burner even when the igniter is hot.
Symptoms:
- Igniter glows continuously
- No flame appears
- No gas flow to burner
- Loose Wiring Connection
High temperatures inside ovens can damage wiring.
Check for:
- Burnt terminals
- Loose connectors
- Damaged wire insulation
Poor connections can prevent proper igniter operation.
- Low Gas Supply
Insufficient gas pressure can prevent ignition.
Check whether:
- Other gas appliances work normally
- The gas shutoff valve is fully open
- Faulty Electronic Control Board
Some ovens use control boards to manage ignition.
If the board fails, it may not properly power the igniter or gas valve.
Possible signs:
- Intermittent heating
- Random ignition failures
- Error codes
- Defective Temperature Sensor
A faulty oven sensor can cause incorrect heating behavior.
Symptoms may include:
- Oven won’t reach temperature
- Oven shuts off early
- Inconsistent cooking results
Before Replacing Parts
If the igniter glows but the burner never lights, the igniter itself remains the most common failure point. Many glowing igniters are simply too weak to open the gas valve.
Always disconnect power and follow proper safety procedures when servicing gas appliances.
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