Error code
La Cornue induction hob: the hob is completely dead, which the maker attributes to the supply rather than the appliance
La Cornue — an indicator rather than a code. A hob with no display and no response at all is not, in La Cornue's own account, an appliance problem in the first instance.
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What we can confirm
Signal No display at all, from the manufacturer's own documentation
This code has no number, because this equipment has no display to put one on. The appliance signals it instead — an alarm, a symbol or a pattern of lights — and what it means is recorded in the documentation that ships with it.
The signal
No display at all
A hob with no display and no response at all is not, in La Cornue's own account, an appliance problem in the first instance. The guide gives one explanation for it: over-voltage or loss of supply voltage to the cooker. That is worth knowing before a service call, because the checks are upstream of the range — the breaker, the isolator and the supply — and because a dead display on an induction hob and a dead display with a latched U400 mean two different things.
or call (305) 614-3699
What it narrows down to
no display, which the maker puts down to the supply
Diagnostic
From $95, credited to the repair
On the same appliance
What else belongs to the cooktops and rangetops
On this make a code belongs to the appliance rather than to a product line. These are the other conditions this machine can display, and the models that can show this one — a display often has more than one thing to say, and the model number decides what any of it costs to put right.
Other codes this appliance can display
the hob electronics are too hot and have shut down
the electrical connection is wrong and the hob has latched off
an internal problem that needs a technician
the protective device keeps operating and that is a test, not a reset
it will not switch on, and both of the maker's checks are upstream
the zone is still hot — an indicator, not a problem
the zone cannot see a suitable pan, and pan size is the usual reason
disconnect it immediately and do not use it until it is repaired
pan noise on induction is normal at high power
scratches do not come out, and pan bases are usually the cause
the flame safety device is not holding in
usually a burner head refitted wrongly or wet after cleaning
The same digits mean different things on different equipment. Search the full code list
In more detail
About La Cornue induction hob: the hob is completely dead, which the maker attributes to the supply rather than the appliance
What the appliance is actually doing
A hob with no display and no response at all is not, in La Cornue's own account, an appliance problem in the first instance. The guide gives one explanation for it: over-voltage or loss of supply voltage to the cooker. That is worth knowing before a service call, because the checks are upstream of the range — the breaker, the isolator and the supply — and because a dead display on an induction hob and a dead display with a latched U400 mean two different things.
Quoted rather than interpreted
Over voltage or loss of supply voltage to the cooker.
From the CornuFé 110 induction installation and user guide (U111136-03, January 2023), in a User Guide & Service Manual downloaded from La Cornue's own site. Nothing on this page is decoded beyond what that sentence says.
Which machines this one applies to
La Cornue induction cooktops and rangetops, and the electric and multifunction ovens. La Cornue publishes three codes in the whole of its US documentation and its Château guide carries no troubleshooting section, so a behavior missing from this archive is not proof that your appliance cannot do it — the maker simply never wrote a table for it. What its guides do document, they document in sentences, and those are on this site under the maker's own wording. The model number, and which top the range was ordered with, settle what any of it means.
What to do about it
- Check the breaker and any isolating switch for the range. This is the whole of the maker's own answer.
- Look at whether anything else in the kitchen lost power at the same time.
- Note whether the cooktop went dead during use or was found dead. During use points at supply or protection; found dead points at something switched off.
- If the supply is proved good and the hob is still dead, have it measured at the appliance.
- On an all-induction range remember the ovens are electric too — whether they also died is useful information.
Where this goes next
The job this usually becomes is cooktop control and wiring repair, and every one of those pages carries a starting figure and the reasons that move it. If it turns out to be nothing — and on this make a real share of these are modes rather than problems — the visit ends there and you pay the diagnostic and nothing else, or call (305) 614-3699 and describe what the display is doing before booking anything.
This article is based on:
- Official manufacturer documentation
- Internal repair procedures
- Technician repair history
- Company quality standards