Written by
Margot Ellery Appliance Care EditorPublished October 29, 2026
VERIFIED
Error code27
ApplianceInduction Cooktop
Error Code 27 in short
On the La Cornue W freestanding induction hob (2012 guide), Error Code 27 means the electronics have overheated. The hob beeps when an error code comes up.
What to look at
How the cooktop is installed, with particular attention to ventilation.
The air intake and outlet vents in the body under the hob must never be covered.
At least 50 mm (about 2 in) must stay clear between the underside vents and anything that blocks the airflow.
Why heat builds up
The guide explains that long use at full power in a warm room can stop the electronics from cooling enough. The hob first lowers a zone’s power by itself, for example from 9 to 4, and if that keeps happening, missing or poor ventilation may be the cause.
Related codes
25 is the other numbered code on this hob: a connection problem.
E2 is the overheated-electronics message on CornuFé induction ranges.
Hob repair in San Francisco
If 27 returns after the vents are clear, call (415) 403-2790 about La Cornue induction cooktop repair around San Francisco and the Bay Area. Let us know it is the W hob, how it is built in, and what you were cooking when the code came up.
Model compatibility: the meaning of 27 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 27 means the electronics system of the hob has overheated.
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?
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