Written by
Margot Ellery Appliance Care EditorPublished October 29, 2026
VERIFIED
Error code25
ApplianceInduction Cooktop
Meaning of Error Code 25
The La Cornue W induction hob guide (2012) lists Error Code 25 for a cooktop that is not properly connected to the electrical network. Like every code on this hob, it comes with a beep.
The step in the guide
Check the power connection. The same guide covers the connection options and the 32 A or 64 A clamping, which is installer work rather than an owner task.
Any other number on the W hob
For every code other than 25 and 27, the guide describes a technical defect that needs a technician.
U400 is the wrong-connection message on CornuFé induction ranges.
Electrical checks and cooktop service
A connection fault is a job for a technician. Phone (415) 403-2790 for La Cornue induction cooktop repair in San Francisco and the Bay Area, and mention the code, that it is the W hob and whether any electrical work was done recently.
Model compatibility: the meaning of 25 given here applies to the models named above. Record your full model and serial number before acting — it decides which parts and checks apply.
Plain language
What this code means
Error Code 25 means the cooktop is not properly connected to the electrical network.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your La Cornue appliance?
Book a specialist visit for a clear estimate and approval before any repair.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
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Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
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