E2 is the message for an overheated electronic unit.
Range service in San Francisco and the Bay Area
A wrong connection needs a technician, so phone (415) 403-2790 about La Cornue induction cooktop repair in San Francisco and the Bay Area. Tell us the code is U400, give the range model, and note who carried out the installation or connection if you know.
Model compatibility: the meaning of U400 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
U400 reports an incorrectly connected cooker, with the control switching off after about 1 second and the code staying displayed.
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.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your La Cornue appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
