One burner keeps clicking
Usually one burner area was just used, cleaned, or had a spill. The flame may light but the clicking keeps going.
Start here: Start with that burner cap, burner head, and igniter area for moisture or misalignment.
Cooktop noise troubleshooting
LG Gas Cooktop Keeps Clicking
Direct answer: If your LG gas cooktop keeps clicking, the most common causes are moisture around a burner head or igniter, a burner cap sitting crooked, or food residue bridging the spark path. If the clicking continues with all knobs off and the top is dry, the stronger suspect is a stuck cooktop ignition switch or a failing cooktop spark module.
Most likely: Start with the burner that was just used, boiled over, or cleaned. That is usually where the problem lives.
A gas cooktop click is the igniter trying to light gas. One or two clicks at startup is normal. Rapid clicking that keeps going after the flame is lit, or clicking with every knob off, means something is still telling the cooktop to spark. Reality check: after a boil-over or heavy cleaning, this can take hours to fully dry out. Common wrong move: scrubbing the igniter with anything abrasive or flooding the burner area with cleaner.
Don’t start with: Do not start by ordering a spark module. Constant clicking is often a wet or dirty burner, and that fix costs nothing.
If one burner clicks mostCheck that burner cap position, the igniter tip, and any moisture first.
If all burners click with knobs offSuspect a wet or stuck cooktop ignition switch, or the cooktop spark module after the easy checks.
Last reviewed: 2026-04-17
What the clicking pattern is telling you
All burners click together
You hear repeated clicking from multiple burners even though you are only using one, or all knobs are off.
Start here: Dry the whole top first, then focus on a stuck cooktop ignition switch or spark module.
Clicking started after cleaning
The cooktop worked before, then started clicking after wiping it down or spraying cleaner near the burners.
Start here: Let the burner wells and switch area dry fully before assuming a failed part.
Clicking happens with no flame or weak flame
The burner may not light cleanly, or the flame looks uneven while the igniter keeps snapping.
Start here: Check burner cap seating and clogged burner ports before chasing electrical parts.
Most likely causes
1. Moisture around the cooktop igniter or under the burner cap
This is the most common cause after boil-overs, heavy wiping, or steam from cooking. Moisture can let the spark track where it should not.
Quick check: With the cooktop cool and gas off at the knobs, remove the grate and look for dampness, water spots, or cleaner residue around the burner head and igniter.
2. Cooktop burner cap or burner head out of position
A cap sitting slightly crooked can throw the flame pattern off and keep the igniter clicking because ignition is delayed or unstable.
Quick check: Lift the cap and set it back so it sits flat and centered with no rocking.
3. Food residue or grease near the cooktop igniter or burner ports
Grease, starch, and burnt-on spill residue can block gas flow or create a dirty spark path that keeps the igniter firing.
Quick check: Look for crusted residue around the igniter tip, burner slots, and the cap seating surface.
4. Stuck cooktop ignition switch or failing cooktop spark module
If the top is dry, the caps are seated, and the clicking continues with all knobs off, an electrical control part is more likely.
Quick check: Turn each knob gently from off to lite and back. If one knob feels sticky or the clicking changes when you touch one valve stem area, that switch branch moves up the list.
Step-by-step fix
Step 1: Pin down whether it is one burner or the whole cooktop
You want to separate a simple burner-area problem from a switch or spark-module problem before taking anything apart.
- Make sure all burner knobs are fully in the off position.
- Listen closely and note whether the clicking seems tied to one burner area or happens across the whole cooktop.
- If the clicking started right after cooking, a spill, or cleaning, let the cooktop cool completely before checking further.
- If you smell gas, stop using the cooktop and do not continue troubleshooting.
Next move: If the clicking stops once the top cools and dries, you were likely dealing with temporary moisture. If the clicking keeps going cold and dry, especially with all knobs off, keep moving toward the switch and spark-module checks.
What to conclude: A single-burner pattern usually points to cap position, debris, or moisture at that burner. Whole-top clicking points more toward the ignition control side.
Stop if:
- You smell gas at any point.
- A burner lights with delayed ignition or a small pop.
- You see arcing somewhere other than the igniter tip.
Step 2: Dry the burner area that was used, cleaned, or spilled on
Moisture is the most common reason a gas cooktop keeps clicking, and it often hides under the cap or around the igniter base.
- Remove the grate and lift off the cooktop burner cap from the problem burner.
- Blot visible moisture with a dry paper towel or cloth.
- Leave the cap off for a while so trapped moisture can evaporate from the burner head and igniter area.
- If needed, use a hair dryer on a low, warm setting from a safe distance to gently dry the area. Keep the cooktop knobs off while doing this.
- Reinstall the cap only after the area looks fully dry.
Next move: If the clicking stops after drying, no part is needed. Use the burner normally and keep an eye on it after the next cleanup. If the burner is dry and still clicks, check cap alignment and residue next.
What to conclude: Drying fixes a lot of these calls. If it does not, the issue is more likely physical alignment, residue, or an electrical switch problem.
Step 3: Reseat the cooktop burner cap and clean off simple residue
A cap that sits crooked or a dirty burner head can cause weak ignition and nonstop sparking even when the burner eventually lights.
- With the burner cool, remove the cooktop burner cap again and wipe the cap and burner head seating surfaces with a damp cloth and a little mild soap if needed.
- Clean loose food debris from the burner ports and around the cooktop igniter tip using a soft cloth or wooden toothpick. Do not enlarge any openings.
- Dry everything fully.
- Set the cooktop burner cap back in place so it sits flat, centered, and does not rock when touched.
- Test that burner only.
Next move: If the burner lights quickly and the clicking stops, the problem was cap position or residue. If that burner still clicks after lighting, or the whole top still clicks, move on to the knob and switch check.
Step 4: Check for a sticky cooktop ignition switch at a knob stem
When all burners click or the clicking continues with every knob off, one wet or sticky ignition switch is a common culprit.
- With the cooktop unplugged or power disconnected, remove the knobs if they pull straight off on your model.
- Look around each cooktop valve stem for grease, cleaner residue, or signs that liquid ran down behind the knob.
- Wipe the area lightly with a barely damp cloth, then dry it well.
- Turn each stem gently by hand through its normal range and back to off, feeling for one that binds, feels gummy, or does not return cleanly.
- Restore power and listen again.
Next move: If the clicking stops after drying and working one sticky stem, that switch area was likely wet or sticking. If the clicking stays constant and no knob area stands out, the cooktop spark module becomes the stronger suspect.
Step 5: Decide between a cooktop ignition switch problem and a cooktop spark module problem
Once the burner areas are dry and aligned, the remaining likely repair is usually one of these two parts.
- If one knob area clearly felt sticky, changed the clicking when touched, or had obvious liquid intrusion, plan on replacing the cooktop ignition switch for that control.
- If all knob areas feel normal and the clicking continues across the cooktop with everything dry and off, the cooktop spark module is the more likely failed part.
- Do not keep using the cooktop if it clicks randomly, lights late, or sparks when no burner is being used.
- If you are not comfortable opening the cooktop to access ignition parts, schedule appliance service and describe exactly when the clicking happens.
A good result: If replacing the confirmed failed ignition part stops the random clicking and burners light normally, the repair path was correct.
If not: If a new switch or spark module does not solve it, the diagnosis needs on-site testing for wiring damage, moisture trapped deeper in the top, or a burner electrode issue.
What to conclude: At this point you have ruled out the easy no-parts fixes. The repair is now in the cooktop ignition circuit, not basic burner cleanup.
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FAQ
Why does my gas cooktop keep clicking after I clean it?
Usually because moisture got around the cooktop igniter, under a burner cap, or down a knob stem into an ignition switch. Let it dry fully, then reseat the burner cap and test again.
Is it normal for all burners to click when I turn on one burner?
Yes, many gas cooktops spark at multiple burners at once during ignition. What is not normal is clicking that keeps going after the flame is lit or clicking with all knobs off.
Can a crooked burner cap really cause nonstop clicking?
Yes. If the cooktop burner cap is not sitting flat, gas may not light cleanly at the igniter and the spark can keep firing longer than it should.
How long does it take a wet igniter area to dry out?
Sometimes it is quick, but after a boil-over or heavy cleaning it can take several hours. Hidden moisture under the cap or around the switch area is what drags it out.
Should I keep using the cooktop if it still clicks but the burner lights?
Not for long. A burner that keeps sparking after lighting can wear ignition parts and may point to a switch or spark problem. If drying and reseating do not fix it, move to repair or service.
What part usually fails when the cooktop clicks with all knobs off?
After you rule out moisture and sticky knob areas, the most common repair is a cooktop ignition switch that is stuck closed or a failing cooktop spark module.