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HomeRepair HelpThermador Oven RepairThermador Gas stove burner won't light Repair
Thermador Gas stove burner won't light
When your Thermador gas stove burner won't light, start with the burner cap. A cap that is not seated correctly on the burner base can prevent the igniter from sparking properly, so turn off the gas stove, let the cooktop cool, and reposition the cap. If the cap is correct, a weak or intermittent spark points to the spark module. Before replacing it, inspect the spark electrode and spark wire. Next, check for an incoming power problem by testing the electrical outlet and checking the circuit breakers or fuses. If other burners spark but one burner does not, the spark ignition switch may be defective. On some Thermador gas stoves, the spark ignition switch and harness are sold as one assembly. A worn or defective spark electrode can also cause clicking without ignition, even when gas reaches the burner. These are the most common causes of a gas stove not lighting. Enter your Thermador model number to find the exact replacement spark module, spark ignition switch, harness, or spark electrode for your range. Always shut off power and gas before testing or replacing parts.
01 - Burner cap not on correctly
If the burner cap is misaligned on the burner base the igniter may not spark properly, and the burner flame will be uneven. Confirm the appliance is turned off and the stovetop is cool to the touch, then readjust the burner cap, if necessary, so it is seated properly on the burner base.
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02 - Thermador Range/Stove/Oven Spark Module
The spark modules provides power to each surface burner spark electrode. If the burner is produces a weak spark, or if the burner sparks intermittently, the spark module might be defective. Before replacing the spark module, first check the spark electrode and the spark wire. If the spark electrode and spark wire are not at fault, the spark module is likely defective. If the spark module is defective, replace it.
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03 - Incoming Power Problem
The electrical outlet may not be getting power. To determine if the outlet is getting power, try plugging something else into the outlet. If the outlet is not getting power, check the home circuit breakers or fuses.
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04 - Thermador Range/Stove/Oven Spark Ignition Switch
When the burner is turned on, the spark ignition switch sends voltage to the spark module to produce a spark. If the spark ignition switch is defective, it won't send voltage to the spark module, and the burner won't be able to produce a spark. If your range's burner isn't sparking, check to see if the other burners are sparking properly. If the other burners are sparking properly, the spark ignition switch is likely defective.
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05 - Thermador Range/Stove/Oven Spark Ignition Switch and Harness
When the burner is turned on, the spark ignition switch sends voltage to the spark module to produce a spark. If the spark ignition switch is defective, it won't send voltage to the spark module, and the burner won't be able to produce a spark. If your range's burner isn't sparking, check to see if the other burners are sparking properly. If the other burners are sparking properly, the spark ignition switch is likely defective. If the spark ignition switch is not sold separately, you will have to purchase the switch and harness assembly.
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06 - Thermador Range/Stove/Oven Spark Electrode
The spark electrode sends a spark to ignite the gas in the burner assembly. If the spark electrode is defective or worn out, it might not produce a spark, or the spark might be too weak to ignite the gas. As a result, the spark electrode will make a clicking sound when the burner is turned on, but the burner won't light. If the spark electrode is defective, replace it.
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Frequently Asked Questions
Why won't my Thermador gas stove burner light?
My gas stove clicks but won't light. What should I check?
Why is one Thermador burner not sparking while the other burners work?
What if none of the gas stove burners will light or spark?
How do I find the correct Thermador spark electrode or spark module?
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