No zones detect any pan
The cooktop powers up, but every burner acts like there is no cookware present.
Start here: Start with a known magnetic pan, control lock, and power reset before suspecting multiple failed parts.
Direct answer: Most induction cooktops fail to detect a pan because the cookware is not magnetic enough, the pan is too small for that zone, or the glass and pan bottom have moisture or residue between them. If only one zone has the problem after those checks, that zone's cooktop burner or cooktop switch is the likely repair path.
Most likely: Start with the pan itself, then match it to the right cooking zone, then clean and dry both surfaces before assuming an internal failure.
Induction units are picky in a very specific way. They need a flat magnetic pan sitting centered on a clean dry zone. Reality check: a pan that works on one induction burner can still fail on another if the pan is warped or the zone is larger than the pan base. Common wrong move: testing with aluminum, copper, or a pan with a decorative stainless bottom and assuming the cooktop is bad.
Don’t start with: Do not start by ordering a control part just because the display says no pan or the burner cycles off.
The cooktop powers up, but every burner acts like there is no cookware present.
Start here: Start with a known magnetic pan, control lock, and power reset before suspecting multiple failed parts.
Other burners work normally, but one spot will not recognize cookware that works elsewhere.
Start here: Focus on pan size match, surface condition, and then that zone's cooktop burner or switch path.
Heat starts for a moment, then the cooktop beeps, flashes, or shuts that zone off.
Start here: Look for a warped pan bottom, moisture under the pan, or a pan that is too small for the selected zone.
Larger pots work, but smaller saucepans or moka pots are ignored.
Start here: Use the smallest compatible zone and confirm the pan base is within that zone's sensing range.
This is the most common cause. Induction needs a magnetic base, and some stainless pans only have a thin magnetic layer or none at all.
Quick check: See whether a magnet sticks firmly to the bottom center of the pan, not just weakly at the edge.
A pan that is too small, off-center, or sitting partly outside the marked ring may not be sensed consistently.
Quick check: Center the pan on the correct zone and try a pan with a wider flat base.
A film of water, cooked-on grease, or a pan bottom that rocks can interrupt sensing and make the zone drop the pan signal.
Quick check: Dry the glass and pan bottom completely, then set the pan down and see if it sits flat without wobbling.
If known good pans work on other zones but one zone still will not sense them, the fault is usually local to that burner area or its control path.
Quick check: Test the same pan on a working zone, then move it back to the dead zone and compare behavior.
Most no-pan complaints turn out to be cookware issues, and this is the fastest safe check.
Next move: If the cooktop detects the known good pan, your original cookware is the problem, not the cooktop. If a known good magnetic pan still is not detected, move on to zone match and surface checks.
What to conclude: You are separating a cookware problem from a cooktop problem before spending time or money.
Induction sensing gets unreliable when the pan is too small, off-center, or sitting on moisture or residue.
Next move: If the zone now detects the pan, the issue was size mismatch, placement, or residue under the pan. If the same zone still will not detect a clean centered pan, compare that zone against the others.
What to conclude: This rules out the easy field problems that make induction act erratic even when the electronics are fine.
A single dead zone points to a local component problem. All zones failing points more toward controls, settings, or incoming power.
Next move: If the cooktop works after unlocking controls or resetting power, the issue was likely a control state glitch rather than a failed part. If only one zone still fails after reset, suspect that zone's cooktop burner or cooktop switch. If no zones work, stop at basic checks and arrange service.
Visible heat damage or impact damage can confirm that the problem is not the pan and not a simple setting issue.
Next move: If you find only residue or a pan issue and the zone starts working again, no part is needed right now. If one zone remains blind to known good cookware with no setting issue, the likely repair is the cooktop burner first, then the cooktop switch/control path if symptoms point there.
Once the easy causes are ruled out, guessing gets expensive. The repair should match the exact pattern you found.
A good result: If the repaired zone now senses the same pan as reliably as the others, you fixed the right problem.
If not: If the zone still will not detect cookware after the supported repair path, the fault is deeper in the cooktop's internal electronics and is usually a pro job.
What to conclude: You have narrowed the problem to a realistic repair path instead of replacing random parts.
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The pan may not be magnetic enough at the center, may be too small for that zone, or may have a warped bottom. A pan can look heavy and solid but still fail induction sensing.
Yes. Moisture, grease film, cooked-on residue, or even condensation on the pan bottom can interfere with reliable sensing, especially on smaller pans.
That usually means the cookware is not the main problem. After you rule out pan size and surface residue, the fault is often in that zone's cooktop burner or cooktop switch path.
Sometimes. If the controls are glitched, locked, or stuck after a power event, shutting the breaker off for a few minutes can restore normal operation. It will not fix a cracked glass top or a failed burner component.
A simple magnet test is the quickest check. If a magnet sticks firmly to the bottom center of the pan, it is a good candidate for induction. Weak attraction or attraction only at the edge is less reliable.
If only one zone will not detect any known good pan and the controls otherwise respond normally, the cooktop burner is the stronger first suspect. If that zone also has touch or selection problems, the cooktop switch becomes more likely.