La Cornue Induction Zone Shuts Off or Shows an Error What to Check

An induction zone heats the pan, not the glass, and it needs to detect a suitable pan to run. One CornuFe induction guide says no heat is produced when there is no pan or the pan is too small, and a pan-missing symbol appears. The same guide says a zone switches off after 10 minutes without detecting a pan. So a zone that goes quiet while you are stirring on a small or lifted pan, or after you move a pan away for a moment, may be acting as designed.

Chateau-series G4 induction hobs use display codes too. Their guide lists U for no pan or an inadequate pan, E for an electronic failure, H for residual heat and L for lock. Codes differ between models, so match what your display shows to your own manual and not to a list from a different range.

Pans cause more shutoffs than any failed part, so begin there. The CornuFe guide gives minimum base diameters by zone: 4 3/4 in for the front left, 5 1/2 in for the rear left, rear right and front right, and 8 1/4 in for the center. Smaller pans reduce power. It advises thick, smooth, flat-bottomed pans, and says copper, aluminum or ceramic pans are not suitable. It also advises avoiding composite aluminum pans with steel inserts.

Try a heavy, flat steel or cast-iron pan of the right size, centered on the zone, with a dry base. If the zone runs normally with that pan, the earlier pan was the cause. If the same pan runs on one zone and not on another, note which zone it is.

Cleanliness of the base counts too. A film of grease or a burned-on spot on the bottom of a pan can keep it from sitting flat, and a pan that rocks on the glass is more likely to be read as missing. Wipe the pan base and the glass before testing, and avoid sliding rough cookware across the surface.

The CornuFe guide describes code E2 as the electronics being too hot, and tells owners to check ventilation or look for a boil-dry pan. That fits a common pattern: a zone runs for a while on high, then stops. Clear the space around the range, make sure nothing is blocking vents, and let the range cool before trying again. Use the hood when cooking at high heat; the hood manuals recommend running it for high heat.

Do not rely on pan detection as your off switch. The G4 guide says to stop a zone using the control knob. It also warns that the surface can still be hot after the indicators go out.

A code names a condition the control noticed, not necessarily a broken part. A pan code points to the cookware. A heat code points to airflow and load. Neither proves the electronics are damaged, and neither should be cleared by repeated power cycling. If a code returns with a suitable pan and good ventilation, the pattern is worth a diagnosis, and the exact wording of the code will help.

The CornuFe guide also says that repeated fuse or RCD trips need a qualified repair engineer. A breaker that trips each time the zones run is an electrical fault and not an induction setting.

For the first cleaning, the G4 guide says to use a damp cloth with no detergent, because detergent can leave a blue tint. After that, the CornuFe care notes call for a glass cooktop cleaner. Spills left to burn on can make a zone read oddly, and a quick wipe once the surface has cooled is the safest routine. Let the glass cool fully first.

Stop using the cooktop if the glass is cracked: the G4 guide says to disconnect power immediately and not to cook on a broken surface. Stop if a code returns with a suitable pan, if the breaker trips, or if an Er code appears. Do not open panels or test connections. Keep the model label, the full code and a short note of what was on the zone and how long it had been running.

Why does my zone click off when I lift the pan?

The control stops heating when it no longer detects a pan. After about 10 minutes without a pan, the CornuFe guide says the zone switches off completely.

Can I use my aluminum or copper pans?

The CornuFe induction guide says copper, aluminum and ceramic pans are not suitable. Check your own manual for the cookware it recommends.

Does E2 mean the cooktop is broken?

The guide describes it as the electronics running too hot. Check ventilation and any boil-dry pan first, then let the range cool.

Can I clear a code by cutting the power?

A single documented reset is fine if your manual describes one, but repeated resets hide a pattern that a technician needs to see.

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Official manuals and support notes are available on La Cornue Support.