Igniter stays clicking after ignition

This step-by-step repair guide walks you through fixing igniter stays clicking after ignition on your LG LRG4115ST (Gas Range). With the right tools and parts, most homeowners can complete this repair in 1–2 hours and avoid a costly service call.

Part of our Top 20 Oven Models & Common Repair Issues Guide. Browse all oven repair guides for related models and issues.

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Common Symptoms & Causes

If your LG LRG4115ST is experiencing igniter issues, you may notice one or more of the following symptoms after the burner has already lit:

The igniter continues clicking rapidly even after the burner flame is established
One specific burner’s igniter clicks non-stop while others function normally
The clicking persists until the range is completely powered off at the breaker
A faint burning or electrical smell accompanies the continuous clicking sound

This issue is most commonly caused by moisture trapped inside the igniter switch, a cracked or worn spark module, or a faulty igniter switch that has failed to release properly after activation.

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Safety First

Unplug the oven from the power outlet before starting any repair — never work on a live appliance.
Wear work gloves when handling metal brackets, sheet metal edges, or sharp components.
Take photos with your phone before disconnecting any wiring harnesses or connectors.
Work in a well-lit area with enough floor space to lay removed panels flat.

Tools & Parts Needed

Essential Tools

Phillips #2 screwdriver
¼” nut driver
Multimeter
Work gloves (heat-rated)
Flashlight

Replacement Parts

Step-by-Step Repair Instructions

Step 1

Unplug the range before doing anything else, then remove the grates, burner caps, and burner heads so you can clean all of these components thoroughly in warm soapy water and allow them to dry for at least 2 hours. Moisture trapped under the caps or inside the electrode ports is the number-one cause of continuous clicking on LG gas ranges, because even a thin film of water creates a conductive path that keeps the spark circuit active. Pro tip: use a hair dryer on a low setting to speed up drying in the electrode wells, but never reassemble while any component feels cool and damp.

Step 2

Visually inspect the ceramic insulator on each igniter electrode, looking for hairline cracks or chips, because a damaged insulator causes the electrode to arc to ground continuously instead of only when you turn the knob. If you find a cracked insulator, replace that electrode by removing its single Phillips screw and unplugging the one-wire harness connector — the repair takes about two minutes per electrode. Safety note: confirm the range is still unplugged before touching any electrode or harness.

Step 3

Reassemble the burner heads and caps carefully, making sure the notch on each cap aligns with the slot on its corresponding burner head, because a misaligned cap sits unevenly and can keep the electrode gap incorrect or allow moisture to pool. Improper seating is a frequently overlooked cause of persistent clicking that survives even a thorough cleaning. Take a moment to press each cap down firmly and confirm it does not rock before replacing the grates.

Step 4

Restore power and test the range; if clicking continues on one or more burners, you need to determine whether the fault is in the spark module or the wiring by testing with a multimeter. Confirm that 120V AC is present at the input side of the spark module, then probe each electrode output wire at the module connector while a helper briefly turns a knob — a working output should pulse 120V AC, while a stuck-on output with no knob turned points to a failed module. A shorted or failed spark module will send continuous voltage to all electrodes regardless of knob position, which is why all burners often click together when the module is the culprit.

Step 5

Replace the spark module (LG part number EBR73142003) if your testing confirms a stuck-on output, because no amount of cleaning or electrode replacement will stop clicking caused by a module that has internally failed. Access the module by removing the backsplash panel — it is held by 2 Phillips screws — then unplug the wire harness and swap in the new module, which plugs in identically. Safety note: even with the range unplugged, capacitors inside the module can hold a residual charge, so avoid touching the module’s internal board and handle it only by its plastic housing.

Step 6

Restore power and test every burner individually by turning each knob to ignite and then releasing it, confirming that clicking stops within one second of releasing the knob. If all burners now stop clicking promptly, the repair is complete; if one burner still clicks after module replacement, recheck that burner’s electrode connection and cap alignment, as a loose harness pin or rocking cap can persist independently of the module. Document which parts were replaced and keep the old module until you have confirmed normal operation through several cooking cycles.

Where to Buy Replacement Parts

Find genuine OEM and aftermarket replacement parts for your LG LRG4115ST (Gas Range) on Amazon:

When to Call a Professional

If the issue persists after completing all steps above, the problem may involve the sealed refrigerant system, a failed main control board, or wiring that requires specialized diagnostic equipment. Contact a licensed appliance technician — attempting sealed-system repairs without EPA 608 certification is illegal and unsafe.

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How Much Does This Repair Cost?

DIY parts for this repair — typically a replacement igniter switch or moisture-damaged burner cap — run $15–$60 depending on the component needed. A professional service call for the same fix generally costs $150–$300 once labor and fees are included. Tackling this repair yourself can save you $100–$250 or more.

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Frequently Asked Questions

Why does my LG LRG4115ST igniter keep clicking even after the burner is lit?

A wet or dirty igniter is the most common cause, as moisture and grease buildup prevent it from shutting off. Clean the igniter tip with a dry toothbrush and ensure the burner cap is properly seated.

Is it safe to keep using the range while the igniter is continuously clicking?

It is generally safe short-term, but continuous clicking strains the igniter module and should be repaired promptly. Avoid leaving the range unattended until the issue is resolved.

How do I know if the igniter switch needs to be replaced on my LRG4115ST?

If cleaning the igniter and reseating the burner cap does not stop the clicking, the igniter switch is likely faulty. A failed switch will require replacement using LG-compatible parts for your specific model.

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