DCS Cooktops CONT-SPARK Error: Continuous sparking
The dcs cooktops error code cont-spark indicates Continuous sparking. This guide covers symptoms, diagnostic steps, and repair options. What CONT-SPARK Means on a DCS Cooktop CONT-SPARK describes a DCS CPU-366 or CPU-486 cooktop that produces continuous ignition clicking without any burner knob being activated, or that continues sparking after a burner is already lit. The […]
Sometimes
DIY Fixable
From $150
Typical Repair Cost
30-60 min
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. Continuous sparking means the ignition system is running outside normal control. Do not use the cooktop until the sparking is resolved. Sustained sparking near gas components or liquid spills creates a fire risk.
Can I reset the code?
Yes. Turning off the circuit breaker stops the sparking immediately. If the cause is moisture, thorough drying and a subsequent power-on may permanently resolve the condition. If a switch or board has failed, repair is required.
When to stop immediately?
Stop if you notice: Continuous sparking persists more than 5 seconds after power is restored following a full dry-out., Any burning smell or visible scorch marks appear near an igniter electrode..
Symptoms You May Notice
Constant clicking with all knobs in off position
The cooktop produces continuous rapid clicking sounds from the ignition module even though no burner knob has been turned, which is the defining observable symptom of CONT-SPARK.
Clicking continues after a burner is lit
After a burner successfully lights, the ignition clicking continues instead of stopping, indicating the control board is not receiving the signal to end the ignition sequence.
Problem started immediately after a spill
Continuous sparking began after a boilover or liquid spill near the ignition switches, suggesting moisture has bridged the switch contacts.
One or more igniter electrodes spark visibly but erratically
Individual electrodes around the cooktop fire in an irregular or continuous pattern rather than the rapid synchronized sequence of a normal ignition attempt.
Possible Causes
Moisture or liquid in the ignition switch mechanism
Liquid from a spill or heavy condensation has entered the burner knob switch and is bridging the ignition contacts, causing the module to run continuously.
DIY PossibleWet or dirty igniter electrode
Liquid on the electrode surface causes it to arc continuously to the nearest grounded surface as moisture provides a conductive path, even without a commanded spark.
DIY PossibleFailed ignition switch or control board
A switch that has failed in the closed position, or a control board that has a stuck output driver, keeps the ignition module energized regardless of knob position.
Requires ProfessionalSafe Checks You Can Do
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1
Dry out the cooktop after any spill
Turn off the circuit breaker for the cooktop immediately. Remove grates and burner caps. Use a clean cloth to absorb any visible liquid. Allow the cooktop to air-dry for at least 8 hours (preferably 24 hours) before restoring power.
Continuous sparking after a boilover is almost always resolved by thorough drying. Rushing the dry-out period often means the clicking returns.
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2
Clean all igniter electrodes
After drying, use a dry toothbrush to clean each igniter electrode tip and the surrounding ceramic body. Remove any residue that could provide a conductive path for stray arcing.
Pay attention to the base of each electrode where it enters the burner head — liquid pools here and is often the source of continuous arcing.
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3
Restore power and test briefly
After 24-hour drying and electrode cleaning, restore breaker power and observe immediately. If clicking stops within 5 seconds of power-up, the moisture issue is resolved. If clicking begins again immediately, power off and schedule service.
Do not leave the cooktop unattended with continuous sparking — sustained ignition module activity can cause overheating of the module.
When to Call a Professional
Contact a qualified technician if:
- Continuous sparking persists after 24-hour drying and electrode cleaning.
- A burner knob switch is physically damaged or stuck.
- Control board diagnostic confirms a stuck ignition output driver.
Need Professional Help?
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