Step-by-step fix
Step 1: Confirm the spark module is the right repair
- Look for symptoms that point to the spark module, such as no spark at any burner, weak or erratic sparking at multiple burners, or clicking that continues even when the burner knobs are off.
- Check the burner caps and bases first. If they are dirty, wet, or out of position, clean and dry them and try ignition again before replacing parts.
- If only one burner will not spark, inspect that burner's igniter and the area around it for damage or heavy buildup, because a single-burner problem is often not caused by the module.
- If your cooktop has power and gas supply available but the ignition problem affects several burners or behaves unpredictably, the spark module becomes a stronger suspect.
If it works: The symptoms fit a failed spark module better than a simple cleaning issue or a single damaged igniter.
If it doesn’t: If the problem is limited to one burner or improves after cleaning and drying the burner parts, stop here and troubleshoot the igniter, burner parts, or switch area instead.
Stop if:- You smell gas and it does not clear quickly.
- You see burned wiring, melted insulation, or signs of arcing inside the cooktop.
- The cooktop surface or burner assembly is cracked or badly damaged.
Step 2: Shut off power and open the cooktop
- Unplug the cooktop if it has a plug, or switch off the correct circuit breaker before touching internal parts.
- Make sure all burner knobs are in the off position.
- Remove grates, burner caps, and any loose burner parts that block access to the top or service panel.
- Remove the screws or fasteners holding the top, front, or access panel in place, then lift or open the cooktop carefully.
- Use a flashlight to locate the spark module. It is usually a small box with several wires connected to it.
If it works: You have safe access to the spark module and can clearly see its mounting screws and wire connections.
If it doesn’t: If you cannot reach the module from the top, check for a lower access panel or mounting screws along the front edge.
Stop if:- You cannot fully disconnect electrical power to the cooktop.
- The cooktop must be forced open or feels stuck in a way that could bend or crack it.
Step 3: Label the wires and remove the old module
- Take a clear photo of the spark module and all wire positions before disconnecting anything.
- Label each wire with masking tape so you can match each terminal on the new module.
- Pull each wire terminal off by gripping the connector, not the wire itself. Needle-nose pliers can help if the terminals are tight.
- Remove the screws or clips holding the old spark module in place and lift it out.
If it works: The old module is out, and every wire is identified well enough to move to the new part correctly.
If it doesn’t: If a label comes loose or a wire position is unclear, use your photo and the terminal markings on the old and new modules to match them before going further.
Stop if:- A wire terminal breaks, a wire pulls out of its connector, or the harness is heat-damaged.
- The replacement module does not have matching terminal positions or the same number of outputs.
Step 4: Install the new spark module
- Compare the new cooktop spark module to the old one and make sure the mounting points and terminal layout are a practical match.
- Mount the new module in the same position as the old one so the wires reach naturally without stretching.
- Transfer the wires one at a time to the matching terminals on the new module.
- Push each connector on firmly so it seats fully, and keep the wires routed away from hot surfaces and sharp edges.
If it works: The new module is mounted securely and all wires are connected in the correct locations.
If it doesn’t: If a connector feels loose, gently tighten the terminal fit or replace the damaged connector before reassembling.
Stop if:- The new module cannot be mounted securely.
- Any wire must be forced, sharply bent, or routed against a burner box or other hot surface.
Step 5: Reassemble the cooktop
- Lower or close the cooktop carefully without pinching any wires.
- Reinstall the access panel, top screws, burner parts, caps, and grates in their original positions.
- Double-check that burner caps are seated properly, because misaligned caps can cause ignition problems that look like a bad repair.
If it works: The cooktop is fully reassembled and ready for a live test.
If it doesn’t: If a panel does not sit flat, reopen it and check for trapped wires or a mispositioned module.
Stop if:- A wire is visibly pinched under the top or panel.
- A burner base, cap, or mounting point will not go back together correctly.
Step 6: Restore power and test real burner operation
- Turn the breaker back on or plug the cooktop back in.
- Test each burner one at a time. Listen for normal clicking and confirm the burner lights promptly.
- Turn each knob back to off and make sure the clicking stops right away.
- Let the cooktop sit for a minute after testing to confirm there is no random clicking with all knobs off.
If it works: Each burner sparks normally, lights reliably, and the clicking stops when the knobs are off.
If it doesn’t: If the cooktop still clicks constantly, fails to spark, or only one burner still acts up, recheck the wire placement and look for a bad igniter or burner switch issue.
Stop if:- You smell gas during testing and the burner does not light promptly.
- Sparks jump to the wrong place, wiring arcs, or the new module overheats.
- The same symptoms remain after confirming the wiring is correct.
Replacement Parts
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FAQ
What does a cooktop spark module do?
It sends high-voltage pulses to the burner igniters so the gas can light when you turn a burner knob to the ignite position.
How do I know if the spark module is bad?
A bad module often causes no spark at multiple burners, weak or erratic sparking, or clicking that continues when the knobs are off. If only one burner has trouble, the problem may be the igniter, burner parts, or switch for that burner instead.
Can I replace the spark module myself?
Many homeowners can, as long as they can safely disconnect power, open the cooktop, and move the wires carefully. Labeling the wires and taking a photo before removal makes the job much easier.
Do I need to shut off the gas to replace the spark module?
This repair mainly involves the electrical ignition system, so the critical step is disconnecting electrical power. If your access requires moving gas-connected parts or you notice any gas smell, stop and handle that safely before continuing.
Why is my cooktop still clicking after I replaced the module?
The wire positions may be wrong, a connector may be loose, or the root cause may be a wet or dirty igniter area, a failed burner switch, or a damaged igniter lead. Recheck the wiring first, then inspect the other ignition parts.