Gas Cooktop: Gas burners won't ignite or spark

A surface burner igniter switch and a spark module control the sparking for burners. A power supply problem, failed igniter switch, bad spark module or wiring failure in the spark ignition circuit can prevent the electrodes from sparking.

On most cooktops, the igniters will spark on all burners when you turn on any one of the burner knobs. If only one of the burner knobs fails to initiate sparking when you turn that knob on, then the burner switch or wiring for that burner likely failed. Unplug the cooktop, check the wiring for that burner and repair any broken wires. If the wires are okay, you'll likely need to replace the burner switch for the burner you turned on because the switch isn't sending a signal to the spark module.

If none of the burner switches initiate sparking, then a power supply problem, wiring failure or a failed spark module is likely preventing the igniters from sparking. Make sure you have the cooktop plugged into a working electrical outlet. Check the electrical outlet for power by plugging a small lamp or appliance into the outlet. If the outlet is dead, reset the house circuit breaker for that outlet. If the outlet still doesn't work, have an electrician repair the electrical outlet. If the electrical outlet is okay, unplug the cooktop and replace the power cord if damaged. If the power cord is okay, check the wiring in the entire ignition circuit and repair any broken wires. If the wires are okay, you'll likely need to replace the spark module because it isn't sending current to the electrodes.

If all burners spark when you turn on a burner but none of the burners light, check the gas supply shut-off valve to make sure it's fully open. If the shut-off valve is fully open, you may need to have your gas supplier check the gas supply pressure. If gas supply pressure is okay, a failed pressure regulator on the cooktop may be preventing gas from flowing to the burners.

If only one burner fails to ignite and that burner's electrode sparks, then a spill may be blocking the burner head's ignition port. Clean the burner if it's clogged.

gas cooktop

These repairs may help solve your gas cooktop problem

Replace the cooktop spark module

Replace the cooktop spark module

The spark module is in the ignition circuit for the gas burners. When a burner control knob is turned to the Lite position, it provides voltage to the spark electrodes on the gas burners. If the spark module fails to provide the electrodes with voltage, then it should be replaced.

November 20, 2014
By Lyle Weischwill
How to replace a spark module on a gas cooktop

Learn how to replace a spark module in a gas cooktop at Sears PartsDirect. Find which tools and parts are needed, step-by-step instructions and more.

Repair difficulty
Time required
 30 minutes or less
Read more
Replace the cooktop spark igniter switch

Replace the cooktop spark igniter switch

The igniter switch is an electrical switch on the stem of the gas surface burner control valve. This switch completes a circuit to the surface burner spark module, causing the burner igniters to spark when the burner switch is turned to the Lite position. Replace the burner igniter switch if the burners don't spark when you turn the burner control knob to the Lite position or if igniters spark constantly even when the burner knobs are in the Off position.

How to replace a spark igniter switch on a gas cooktop

Learn how to replace a spark igniter switch on a gas cooktop at Sears PartsDirect. Find which tools and parts are needed, step-by-step instructions and more.

Repair difficulty
Time required
 45 minutes or less
Read more
Replace the cooktop power cord

Replace the cooktop power cord

The cooktop power cord can deteriorate over time. Check the insulation for cracks or bare spots. Replace the power cord if it's damaged or doesn't work because of a break in the wiring.

Replace the cooktop pressure regulator

Replace the cooktop pressure regulator

The stovetop pressure regulator limits the gas pressure going to the burners. If the gas pressure is too high, the burners won't ignite properly, and the flame increases or goes out. If the pressure regulator doesn't properly control the gas pressure, replace it.

Symptoms common to all cooktops

Choose a symptom to see related cooktop repairs.

Main causes: lack of electrical power, gas supply failure, bad pressure regulator, control system failure

Repair guides for gas cooktops

How to replace a spark igniter switch on a gas cooktop

Follow these step-by-step instructions to fix the surface burner ignition system on your gas cooktop by replacing the spark igniter switches.

Repair difficulty
Time required
 45 minutes or less
November 20, 2014
By Lyle Weischwill
How to replace a spark module on a gas cooktop

No flame on your gas cooktop? Installing a new spark module could be the fix you need.

Repair difficulty
Time required
 30 minutes or less

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