At a glance
Symptoms
- • Burner clicks repeatedly when you turn the knob to ignite, but the flame does not light
- • Multiple burners click at once — even those not in use
- • Clicking continues for several minutes after you turn the burner off
- • Burner lights eventually but only after long delay (5-10 seconds of clicking)
- • Faint smell of unburnt gas while clicking continues
- • Clicking starts on its own with no knob movement (after spills, after cleaning, in humid weather)
- • One specific burner clicks but never lights
Common causes
- • Moisture under or around the burner cap (boil-over, drips, or post-cleaning water — most common)
- • Misaligned burner cap not seated correctly on the burner base
- • Dirty or wet ignitor electrode (the small ceramic piece near the burner)
- • Grease or food debris bridging the gap between electrode and burner
- • Faulty spark module (causes constant clicking even with all knobs off)
- • Damaged burner switch (causing one burner to spark constantly)
- • Cracked ceramic insulator on the ignitor — moisture path to the metal body
- • Loose burner head or worn rubber gasket under the cap
Safety First — Read Before You Start
- •If you smell strong gas, do not attempt to troubleshoot — turn off the gas supply at the wall valve, ventilate, leave the home, and call your gas company from outside. See our gas-smell guide.
- •Always turn all burner knobs OFF before working on or near the cooktop.
- •Do not pour water directly onto the burners — moisture is the cause of most clicking issues, not the cure.
- •When removing burner caps and heads, allow them to fully cool. Cast-iron caps stay hot for 30+ minutes after use.
- •If the unit is hardwired electric for the spark module (rather than a plug-in cord), turn off the breaker before any wiring work.
- •Never block or modify the gas orifice. The orifice is sized to your gas type (natural gas vs. propane) and changing it incorrectly is a fire hazard.
Tools & supplies you'll need
- Soft microfiber cloths
- Hair dryer (for drying the burner area)
- Soft toothbrush or small nylon brush
- Mild dish soap
- Toothpick or wooden skewer (cleaning ignitor port)
- Phillips screwdriver
- Replacement ignitor / spark module if needed
Step-by-step instructions
Turn off all burners and listen
Confirm every burner knob is in the OFF position. If clicking continues with all knobs off, you have a constant-spark fault — usually a stuck spark module or a damaged burner switch on one position. If the clicking only happens when you turn a knob to ignite, the issue is at that specific burner. This single observation determines whether you are about to do housekeeping (specific burner won't light) or a switch/module replacement (clicks with everything off).
Tip: On constant-spark cases, you can stop the immediate annoyance by unplugging the range from the wall (or flipping the breaker). The gas supply is unaffected by power, but the spark generator is silenced. Use this as a temporary measure while you diagnose.
Dry everything thoroughly
If clicking started after a boil-over, recent cleaning, or a humid morning, moisture is the cause about 80% of the time. Remove the burner cap and burner head from the affected burner. Dry the whole area with a microfiber cloth. Use a hair dryer on low heat for 5-10 minutes over the burner base, ignitor, and cavity below — get into all the small spaces. Reassemble and test. Many calls end here.
Tip: After cleaning a gas cooktop, leave the caps and heads off and run a hair dryer over each burner for 2-3 minutes. This routine prevents post-cleaning clicking entirely.
Reseat the burner cap and head correctly
On most modern gas cooktops, the burner cap (the round cast metal piece on top) sits on the burner head (the wider piece with the flame ports), which sits on the burner base. All three pieces must be perfectly aligned. A cap that is even slightly tilted lets the flame port miss the spark gap entirely — the ignitor sparks but never reaches gas. Lift everything off, look at the alignment notches (most have a tab on the cap that fits into a slot on the head), and reassemble carefully. The cap should sit perfectly flat with no rocking.
âš Warning: If the cap rocks even after careful seating, the head or base may be warped from a heavy pan or impact. A warped head requires replacement; do not try to bend it back into shape.
Clean the ignitor electrode
Locate the ignitor — a small ceramic-and-metal piece poking up next to the burner head. The tip should be clean, dry, and roughly 1/8 inch from the burner head. With a dry soft toothbrush, gently brush off any food debris, grease, or residue from cleaning sprays. Use a wooden toothpick to clean any food caught in the gap between the electrode and the burner. Do not use anything metal — scratching the electrode can damage the spark surface or shift its position. After cleaning, give it a hair-dryer pass to be sure it is fully dry.
Tip: A dirty ignitor sparks weakly and intermittently — the same symptom as a wet ignitor. Cleaning it monthly during heavy cooking seasons keeps it reliable.
Test by turning on the burner
With the cap and head reseated and everything dry, turn the burner knob to ignite. You should hear 2-3 clicks before the burner lights. If it lights cleanly, you are done. If it clicks repeatedly without lighting, smell carefully — if there is no gas smell, the gas is being shut off by the safety because the ignitor is not detecting flame. If you smell gas but it is not igniting, the ignitor is not sparking strongly enough or in the right place — re-examine the gap and try once more. Do not leave a burner clicking with gas flowing for more than 5-10 seconds.
âš Warning: If after multiple attempts the burner does not light, turn the knob off, ventilate the kitchen, and wait 5 minutes before trying again or moving to the next step. Do not let unburned gas accumulate.
Diagnose constant-clicking (clicks with all knobs off)
Constant clicking means a switch is sending a 'spark' signal to the module even when off. Two parts can cause this: a damaged burner switch (one knob assembly is internally shorted) or a failed spark module (the box that distributes spark signals to all burners). Process of elimination: with the cooktop off, remove burner caps and heads from each burner one at a time. If the clicking stops when one specific burner's switch is in a certain position, that switch is bad. If clicking continues regardless of all knobs, the spark module itself is failing. Switches are $30-60 and accessible by removing the front panel; spark modules are $40-100 and usually mount on the side of the cabinet under the cooktop.
Replace the ignitor or spark module if needed
If a specific ignitor is cracked or its ceramic insulator is broken, replace it ($15-25). The ignitor is held by one or two screws and connects to the spark module by a small wire. Replacing the spark module is similarly straightforward: turn off power, photograph the wiring (8-10 wires typically), disconnect each, and swap. Reassemble and test all burners. If the clicking has resolved at every burner, you are done. If clicking returns within a few weeks, the underlying cause was likely moisture intrusion through a damaged ignitor — re-examine for cracks or grease infiltration.
Brand-specific notes
Some brands have known design quirks worth knowing about before you start.
GE
GE Profile and Cafe gas ranges (PGB, PGS, CGS series) use a single spark module mounted under the cooktop. The module is the most common eventual failure on these — when one fails, all burners typically click together for a moment when any knob is turned. Replacement is a 10-wire swap with the module clearly labeled.
Whirlpool
Whirlpool gas ranges (WFG, WCG series) often have ignitors that crack at the ceramic insulator after years of grease exposure. A cracked insulator is the second-most-common cause of intermittent clicking on Whirlpool — visible as a hairline ring around the ceramic. Replace the ignitor itself; the module is usually fine.
Samsung
Samsung gas cooktops and ranges (NX, NA series) tend to have constant-clicking issues that trace to the burner valve / switch assembly. Samsung uses a slightly different switch design than other brands and a damaged switch may not just cause constant clicking but also gas-flow issues. Get the brand-specific switch — generic substitutes do not fit reliably.
LG
LG gas ranges (LRG and LSG series) commonly have ignitor issues from boil-overs in their wide oval grates. The ignitor electrodes are mounted close to the burner head and accumulate splatter quickly. A monthly cleaning routine on these prevents most clicking complaints.
Frigidaire
Frigidaire and Electrolux gas ranges (FCRG, FGGF, FFGF series) frequently have failures of the burner cap alignment when the caps are placed off-tab during cleaning. If a customer cleans the cooktop and clicking starts immediately, suspect cap alignment first.
Bosch
Bosch gas cooktops (NGM and 800 series) use higher-end sealed burners with tighter ignitor gaps. Moisture has a more noticeable effect on these — drying with a hair dryer is genuinely required after any wet cleaning, not optional. The ignitor part is brand-specific and only available through Bosch parts channels.
What our techs see most often
Constant-clicking calls split about 70/30: 70% are moisture under the burner cap from a recent cleaning or boil-over, fixable with a hair dryer in 10 minutes. The remaining 30% trace to a damaged burner switch (most common) or a failing spark module. We carry universal spark modules and the most common GE, Whirlpool, and Samsung switches on every truck. The fastest 'fix' for a frantic customer is unplugging the range — that stops the noise immediately while we drive over.
When to call a professional
- → You smell strong, persistent gas — call the gas company first, then a licensed gas appliance tech
- → Clicking persists after drying, reseating caps, cleaning ignitors, and replacing the suspect ignitor
- → You replaced the spark module and clicking continues — the issue is wiring or grounding
- → The unit is a high-end commercial-style range (Wolf, Viking, Thermador) where DIY work may void the warranty
- → You see scorched or melted wiring around the spark module
- → A burner is producing yellow flames or sooting (separate issue but often discovered while diagnosing clicking)
- → You are not comfortable working with the front panel and switch wiring on the cooktop
Stove Maintenance & Replacement Tasks
Step-by-step guides for individual maintenance jobs related to this appliance.
Frequently asked questions
Why does my gas stove keep clicking even when it is off?
Constant clicking with all knobs off means the spark module is being signaled to fire even when no burner has been activated. Two parts can cause this: a damaged burner switch (one knob's internal contacts are shorted) or a failed spark module. Test by removing each burner cap and head one at a time; if rotating a specific knob silences the click, that switch is the culprit. If nothing changes regardless of knob position, replace the spark module.
Is it safe to use the stove if it keeps clicking?
Brief clicking (a few seconds during ignition) is normal and safe. Continuous clicking that won't stop is annoying but not directly dangerous — the gas is only released when a knob is turned, and the constant spark is harmless to the appliance. However, if the clicking is paired with a gas smell or a burner that won't light, turn off the gas at the supply valve and ventilate. Do not let unburned gas accumulate.
Why does my burner click but not light?
Three common reasons: moisture or food debris on the ignitor, the burner cap is misaligned and sparks miss the gas flow, or the spark itself is too weak from a dirty or cracked ignitor. Try drying the area, removing and reseating the burner cap with the alignment tab in its slot, and brushing the ignitor clean. Roughly 80% of these cases resolve with cleaning and drying alone.
How long does an ignitor electrode last?
Ignitor electrodes typically last 10-15 years on average, longer if the cooktop is kept clean and dry. Premature failures (under 5 years) are usually due to repeated boil-overs or aggressive cleaning sprays attacking the ceramic. Replacing one is a $15-25 part and a 5-10 minute job.
My stove worked fine, then I cleaned it and now it clicks constantly. What happened?
Cleaning sprays and water seep under the burner caps and onto the ignitors. The moisture either prevents a clean spark or shorts the ignitor signal so the spark module fires constantly. Remove the burner caps and heads, dry everything thoroughly (a hair dryer is fastest), and reassemble. Going forward, dry the burner area immediately after wet cleaning and never spray cleaner directly into the ignitor area.
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