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La Cornue kitchen

La Cornue Château 90 Rangetop

35 1/2" rangetop — model notes, common issues and related La Cornue cooktop service.

Reviewed by Elena Voss · Last reviewed October 21, 2026

At a glance

Model overview

Cooktop service reference
Model number Château 90 cooktop
Appliance category Cooktop

Touch controls are usually the first thing to change on a Château 90 cooktop, when a panel flickers or responds late to a tap. Soon after, an igniter may start clicking longer than before, or one zone may seem slow to heat. An error code appearing on a single zone is a more specific clue that a technician will want to see. Describe the first change in plain words and in the order it happened. For the booking form, use the Château 90 cooktop model number from La Cornue, the first symptom, and the exact code if you can read it, along with the 35 1/2 inch size on the label. Owners in Los Angeles and Orange County can add these in one short message.

Château 90 cooktop is a La Cornue 35 1/2" rangetop. The model number is printed on the rating label, usually on the underside of the unit; many owners also have it on the warranty card or installation papers; match it letter for letter before booking, because a single letter can change parts.

Known problems

Common issues for this model

Touch controls flicker or lock out

Igniter keeps clicking

Error code on one zone

Burner or zone will not heat

Diagnostics

Related error codes

Get it fixed

Recommended repair service

Helpful notes

Troubleshooting resources

Note which burner or zone fails and whether the others still work normally.

Model-information disclaimer. Confirm your exact model number and specifications with your appliance documentation before booking a repair. Model pages are for identification and compatibility reference.

FAQ

Frequently asked questions

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Hours Mon–Sat: 8:00 AM – 7:00 PM
Service area Serving Los Angeles County and Orange County.
Response time Appointment timing depends on location, route capacity, appliance type, and parts needs.
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