Stove burner stays on high
An electric stove burner that stays on high at every setting usually has a failed control: the infinite switch behind the knob on coil and most radiant cooktops, or a relay on the control board on touch-control models.
Urgent An element that won't turn down or off can overheat pans, food and the cooktop, so switch the range off at the breaker until it has been checked.
What this symptom usually means
An electric stove burner that stays on high at every setting usually has a failed control: the infinite switch behind the knob on coil and most radiant cooktops, or a relay on the control board on touch-control models. Before assuming a fault, rule out normal cycling, which looks alarming if you haven't seen it. GE says its radiant elements cycle on about 75 per cent of the time on High, about half the time at medium and about 25 per cent on Low, and that its burners run at 100 per cent power for periods on every setting, including Low. So an element that glows bright red on Low and then goes dark is working. Whirlpool says its radiant elements have a limiter that cycles them even on HI to protect the glass, and that on coil elements, since June 2018, the inner coil cycles on and off to meet updated safety standards.
A real fault looks different: the element never goes dark on Low, a pot of water boils hard on Low, the heat doesn't change as you turn the knob, or the element won't turn off at all. Repair Clinic lists the surface element switch and the element itself as the parts most often replaced for an element that won't turn off. Switch contacts can weld shut after years of arcing, a burned coil receptacle can damage the switch wired to it, and a wire can short so the element gets full power. On touch controls, a relay on the board can stick closed. A cracked knob, or one put back on the wrong shaft after cleaning, can also leave a switch in the wrong position. On a gas stove, a flame that won't turn down is a valve or knob problem, and gas valve work is for a certified gas contractor.
Checks you can do yourself
- If it won't turn off, cut the powerSwitch off the range's breaker. With oven mitts, move pans off the element and let everything cool. Don't use that element again until it has been checked, and don't leave the kitchen while it is hot.
- Test with water on LowPut a pot of water on the element, set it to Low and watch for several minutes. It should reach a gentle simmer at most. GE says elements run at full power in bursts on every setting, so a red glow on Low is not a fault by itself; a hard, rolling boil on Low is.
- Watch it cycleOn radiant glass, GE says the element is on about 75 per cent of the time at High, 50 at medium and 25 at Low. Whirlpool says a limiter cycles radiant elements even on HI. If yours glows constantly and never goes dark on Low, the control may be stuck.
- Check the knobWith the element off, pull the knob and look at it and the shaft. A cracked knob, or one put back on the wrong shaft after cleaning, can leave the switch in the wrong position. Match each knob to its element label.
- Check the panGE says pans that aren't flat or are the wrong size make radiant elements cycle more often. A warped pan won't make an element stay on high, but it can make heat control seem erratic. Whirlpool suggests flat-bottomed pans matched to the element size.
- Touch controlsTurn the zone off with its own key or the main Off key. If it doesn't respond, switch off the breaker for a minute and restore power. If the zone comes on by itself afterwards, switch the breaker off again and book.
Nothing above involves gas, wiring, refrigerant or removing panels.
What you notice, and what it can point to
Listed in no particular order. They help you describe the problem; only an inspection confirms the fault.
Element glows bright, then goes dark, even on Low
Could point to: Normal cycling at full power in bursts (GE)
Next step: Test with water on Low; no action if it simmers
Radiant element cycles off and on at High
Could point to: Limiter protecting the glass (Whirlpool)
Next step: Normal; no action
Water boils hard on Low and the element never goes dark
Could point to: Infinite switch stuck closed
Next step: Stop using that element and book
Element won't turn off at all
Could point to: Stuck switch or relay, or a shorted wire
Next step: Switch off the breaker and book
Knob turns loosely or points the wrong way
Could point to: Cracked knob or knob on the wrong shaft
Next step: Check and refit the knob; book if the shaft is damaged
Scorch marks or arcing where a coil plugs in
Could point to: Burned receptacle or element terminal
Next step: Stop using it and book; the switch may be damaged too
How it differs by design
- Coil elements: plug into a receptacle and are controlled by an infinite switch that turns full power on and off in timed bursts. Whirlpool says the inner coil on newer elements cycles by design, and that pots should not overhang the element by more than about 1 cm (½ in).
- Radiant glass cooktops: the element sits under the glass with a limiter. GE's on-time figures (75, 50 and 25 per cent) and Whirlpool's note that the element cycles even on HI are the benchmark. GE adds that on dual-size elements, light can spill from the small ring into the larger one because there's no insulation between them.
- Touch controls: power is switched by relays on a control board rather than a mechanical switch, so a stuck element there points to the board or a relay.
- Induction: heats the pan, not an element, and has no glowing coil. A zone that won't turn down is a control fault; see our induction guides for pan-detection issues.
- Gas burners: the knob works a valve directly. A flame stuck on high is a valve or knob problem, and valve work is done by a certified gas contractor.
What our technician checks
These need panels off, live electrical tests or a licensed trade, so they are left to the technician:
- Removing the control panel or lifting the cooktop to reach switches, relays or wiring
- Testing switches, relays and elements with meters
- Replacing a coil receptacle or its wiring
- Any gas valve, burner or connector work
Waived when you go ahead with the repair. You get the cause, the price and our repair-or-replace verdict in writing before any work.
Repairs a technician may recommend
After inspection, not from the symptom alone.
Infinite switch (surface element switch)
When the element stays on full power at every setting. Repair Clinic lists the surface element switch as the part most often replaced for an element that won't turn off. The technician confirms the switch before replacing it, and checks the element and wiring too.
Element and receptacle
When a coil element or its receptacle is burned or has arced, which can also damage the switch. Repair Clinic lists the element as the other common part.
Control board relay
On touch-control and some electronic models, when a relay sticks closed and the zone stays on.
Wiring repair
When a wire from the switch has chafed or shorted, so the element gets full power regardless of the setting.
Knob or switch shaft
When a cracked knob or a damaged shaft stops the switch from turning to the right position.
Gas valve (gas ranges)
When a gas burner flame stays high. We diagnose it; valve work is done by the certified gas contractor we work with.
Brands we see with this problem
Codes, parts and access differ by brand; the brand pages cover where the model label is and what to expect.
Cost, and whether to fix it
What the repair costs depends on the part, the labour and whether a second visit is needed for an ordered part; the written finding gives the total before any work. Our guides on what drives repair costs, stove & range repair costs and repair versus replacement explain how to weigh it.
When to book
Book as soon as an element won't turn off, or boils water hard on Low and never goes dark. Keep the range off at the breaker until the visit if the element can't be controlled. Tell us the brand, whether it's coil, radiant glass, induction or gas, which element it is, and whether it started after a spill, cleaning or a burned-out element. The visit is $89, waived if you go ahead with the repair, and you get the cause, the price and our repair-or-replace verdict in writing before any work. We diagnose gas ranges; burner, igniter, valve and gas-connection work is done by a certified gas contractor we work with. See stove and range repair or cooktop repair; we cover areas such as Nepean, Barrhaven and Hull.
We handle this across Ottawa and Gatineau
Related problems
Stove burner stays on high: questions
Why is my stove burner stuck on high?
The switch behind the knob, called an infinite switch, may have failed with its contacts stuck closed, or on touch controls a relay may be stuck. First make sure it isn't normal cycling: GE says elements run at full power in bursts on every setting.
Why does my element glow red on Low?
Because it runs at full power for short periods. GE says its radiant elements are on about 25 per cent of the time at Low. It's only a fault if the element never goes dark and water boils hard.
Is it dangerous if a burner won't turn off?
It can overheat pans, food and the cooktop, and it is a fire risk if left unattended. Switch the range off at the breaker and don't use that element until it has been checked.
Can I replace an infinite switch myself?
It means removing the control panel and working on 240 V wiring, so it's technician work. The switch is also usually specific to the model and element size, and a burned receptacle or wire may need replacing with it.
My gas burner won't turn down. What should I do?
Turn it off at the knob if it responds, and ventilate the kitchen. If it won't turn off, or you smell gas, leave and call the gas utility from outside. Gas valve work is done by a certified gas contractor.
Sources
- GE Appliances: Electric range and cooktop, surface burners cycle on and off
- GE Appliances: Electric range and cooktop, radiant surface burner turns on and off
- Whirlpool Product Help: Coil element not operating correctly
- Whirlpool Product Help: Cooktop element(s) cycle off and on
- Repair Clinic: Surface element won't turn off, range troubleshooting
Sources checked 2026-09-24.
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- $89 diagnosticWaived when you go ahead with the repair
- Written finding on every visitCause, price and our repair-or-replace verdict
- 90-day warrantyOn labour and the parts we install