Induction cooking feels almost instant when it works, which makes it stand out immediately when a zone stays cold and a pan icon flashes instead. The good news is that this particular complaint is usually about the cookware, not the cooktop.
Because induction zones heat through the magnetic base of the pan itself rather than heating the glass surface, a pan that is not compatible simply will not register — no matter how new or well-maintained the cooktop is.
The magnet test settles it quickly
Hold a refrigerator magnet against the base of the pan in question. If it grips firmly, the pan is magnetic and should work; if it does not stick, or barely holds on, that base will not couple with an induction zone.
Aluminum, copper, and some stainless cookware without a magnetic layer will not work on induction even though they perform perfectly well on gas or radiant electric cooktops.
| Cookware behavior | Likely cause | What to try |
|---|---|---|
| Magnet does not stick to base | Non-magnetic cookware | Use induction-compatible pan |
| Pan works on some zones, not others | Pan smaller than zone | Center a larger pan |
| No zone responds to any pan | Control lock or power issue | Check lock, then book service |
Placement and settings matter too
Even compatible cookware needs to sit centered on the marked zone; a pan pushed to one side, or one noticeably smaller than the zone's minimum diameter, can fail to register the same way a nonmagnetic pan would.
A control lock, active on many Bertazzoni induction cooktops to prevent accidental changes, can also make the surface appear unresponsive. Check for a lock icon before assuming a hardware fault.
Safe to try
- Test cookware with a magnet before buying
- Center pans on the marked zone
- Check for an active control lock
Leave to a technician
- Force the glass surface with damaged or uneven cookware
- Open the cooktop housing
- Test internal power components
Cookware compatibility explains the great majority of "won't heat" complaints on induction. If a properly sized, magnetic pan still fails to register on every zone, that is the point to arrange a diagnosis rather than keep testing pans.
Frequently asked questions
A magnet should grip firmly to the base of the pan; if it does not, the cookware is not induction-compatible.
The pan may be smaller than that zone's minimum size, or positioned off-center from the induction coil.
Yes — an active lock can make the cooktop appear unresponsive even with compatible cookware. Check the display for a lock icon first.
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