- “Disconnect it at the supply — the maker says so, not us”
- “Do not cook on it, even on the zones that still work”
- “The replacement panel is ordered to that top's own zone layout”
Symptom
La Cornue cracked induction glass
This is the one problem on this appliance with a safety instruction attached, and La Cornue's own guide is unambiguous about it: disconnect the cooker from the power supply immediately and do not use it until it has been repaired. The glass is what separates the coils and the electronics from anything spilled on the surface.
- From $95 diagnostic, credited to the repair
- 59 cities and neighborhoods covered
- OEM parts available on order
- In writing the price, before anything is opened
Five ordinary causes
What this usually turns out to be
Cheapest and commonest first, which is also the order we check them in. They sit hundreds of dollars apart, and only the unit settles which one is yours.
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Impact
A dropped pan or a heavy lid. The overwhelming majority of cracked hobs, and it is nobody's problem beyond an ordinary kitchen accident.
Induction glass replacement from $595 -
Thermal shock
A cold wet cloth or a spill of cold liquid onto a hot zone.
Induction glass replacement from $595 -
A boil-dry followed by cooling
Related to the E2 problem: a dry pan takes the glass far past its normal working temperature.
Induction glass replacement from $595 -
A stress point at the frame
Rare, and usually installation-related — a panel bedded or clamped unevenly.
Induction glass replacement from $595 -
Liquid already through the crack
Not a cause but the reason for urgency. Coils and electronics are inspected as part of the job.
Induction hob repair from $325
In five minutes
Before you call anybody
None of it needs tools, and all of it makes the visit shorter.
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01
Isolate it
At the breaker if necessary. This is the first action, before assessment.
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02
Do not test the zones
Curiosity here has a genuine electrical risk behind it.
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03
Keep it dry
No wet cloths, no cleaning products, nothing that can run into the crack.
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04
Photograph it cold
One clear picture tells us the extent and whether it is a panel or an insert.
How it shows up
What people describe when they call
Two shortcuts
Narrow it down before anybody arrives
A description of the behaviour leaves a few possible causes. A code names the subsystem, and the model number says which parts to bring. Either one shortens the visit; both together usually settle it.
If the display is showing something
Photograph it before it clears — codes do not wait. Search the full code list
If there is no code at all
On a range, the data plate is behind the kick panel or on the frame under the oven door. On a rangetop, the data plate is under the deck or behind the kick panel. On a cooktop, the data plate is under the front edge. All models
In more detail
About La Cornue cracked induction glass
What to do before anyone arrives
Turn the cooktop off and isolate it at the supply — the breaker if the appliance has no accessible switch. Do not put a pan on it, do not clean it with anything wet, and do not try the zones to see which ones still work. A crack in a ceramic hob is a path for liquid into live electronics, and the fact that it still cooks is not evidence that it is safe. Photograph it once, cold and dry, and send us that.
What it usually means, by the kind of La Cornue appliance
La Cornue sells one appliance in several forms, and the same behavior points at different things on each of them. A built-in side-by-side and an integrated column are not the same service situation, and a dual-fuel range and an induction range fail in different halves.
- All-induction Château — A full-width panel over four or five zones. Replaced as a panel, matched to the configuration.
- CornuFé 90 and 110 induction — Factory panel, more standardised, usually shorter lead time.
- Ceramic induction module in a gas Château — A two-zone glass insert in a gas top. The rest of the range stays usable while it is on order, which is worth knowing.
Why this page is shorter on diagnosis than the others
Because there is nothing to diagnose. Ceramic glass is either intact or it is not, and once it is not, the appliance is out of service until the panel is replaced. What the visit is actually for is the part that cannot be seen: whether anything has already reached the coils and the electronics through the crack, whether the frame and seal are sound, and what the panel needs to be ordered against. A hob that cracked last week and has been cleaned twice since is a different job from one that cracked this morning.
Ordering the panel
The glass belongs to the top's own layout — the number of zones and where they sit — rather than to a size, because the printed zone markings have to line up with the coils beneath them. On a made-to-order cooktop that means the order goes against the range's configuration code. We quote it with its lead time before ordering. On a gas Château with a two-zone induction insert the rest of the top stays fully usable in the meantime; on an all-induction range it does not, and we will say so plainly when we quote.
This article is based on:
- Official manufacturer documentation
- Internal repair procedures
- Technician repair history
- Company quality standards
Before you book
Questions about La Cornue cracked induction glass
It only looks like a chip at the edge, not a crack. Same rules?
Not quite, and it is worth having it looked at rather than guessed at. A chip at the very edge of the panel, outside the sealed area and away from any zone, can sometimes be monitored — but the assessment is whether the glass is still continuous and whether the seal is intact, and that is not something to judge from above. A chip inside a zone marking or anywhere liquid can sit is treated as a crack. Photograph it and we will tell you which you have before booking anything.
Is it covered by anything?
Impact damage to a glass hob is normally excluded from a manufacturer's warranty, so in most cases the honest answer is no — but it is often covered by household contents insurance as accidental damage, and on a panel for this equipment that is a claim worth making. What helps is a written diagnostic with the cause, the part reference and the quote, which is what our report gives you. Ask for it in that form and we will write it that way.
Where we do it
Across Miami-Dade, Broward, and Palm Beach
Same terms everywhere we go: an on-site diagnostic first, the price agreed in writing, and the exact figure confirmed once we have seen the unit.
Neighborhoods people ask for by name