La Cornue Cooktops
La Cornue Cooktops combine hand-built French craftsmanship with serviceable, repair-friendly engineering. This page covers the lineup, the technologies behind them, and the faults our certified technicians resolve.
The La Cornue cooktop, explained
On a La Cornue, the cooktop is the rangetop of the hand-built range rather than a separate appliance — and that is what makes it special. Built to order in France since 1908, each Château (60 through 165) and Grand Palais 180, along with the freestanding CornuFé 90 “Albertine” and CornuFé 110, carries a configurable cooking surface assembled from mix-and-match modules. You choose the layout when the range is built, and you can browse the configurations we service in our model directory or see current options on the official La Cornue site.
Rangetop modules and technologies
La Cornue’s cooktop modules are the brand’s signature. The brass “flammes” gas burners deliver up to roughly 17,000 BTU on the front burners (around 7,500 BTU rear) on natural gas. The cast-iron French Top — the plaque coup de feu — is a solid simmer plate engraved with La Cornue’s étoiles that creates concentric heat zones, hottest at the center. Induction modules use ceramic glass rated around 2,100 W per zone with a 3,700 W boost, plus a pan detector and an “H” residual heat indicator. Rounding out the menu are a lava-rock gas grill, an electric teppanyaki plate, and the Flamberge gas rotisserie module. CornuFé surfaces use five brass burners or a five-zone induction hob.
Finishes and craftsmanship
The cooktop trim and surrounding range are finished in roughly 50 vitreous enamel colors — the Suzanne Kasler Couleur and Étoilé Collections among them — with brass, nickel, chrome, or copper accents, all hand-assembled by the Compagnons. Because module combinations vary so widely, diagnosing a cooktop fault starts with identifying exactly which modules a given range carries.
Cooking on a French Top and induction
The cast-iron French Top rewards a different technique than open burners: heat radiates outward from a central hot spot, so cooks move pots toward or away from the center to find the right temperature rather than turning a single burner up or down. It excels at long, gentle simmering and holding multiple pans at once. Induction modules, by contrast, react instantly and run cool except where the pan sits, which makes them safer around children and easier to wipe clean — though they require magnetic, induction-compatible cookware to register on the pan detector. Many owners spec a range with both, gaining the slow finesse of the French Top alongside the speed and precision of induction.
Common La Cornue cooktop problems
- Single burner won’t light — clogged ports or a fouled electrode.
- All burners won’t spark — a failed ignition module.
- Continuous clicking — moisture or food debris around the igniters.
- Low or uneven flame — a clogged orifice or air-shutter misadjustment.
- Induction “U” flashing — no or incompatible pan detected; if other zones work, suspect a coil or sensor fault.
- Induction E2 cut-out — electronics too hot or a pot boiled dry; check ventilation.
- U400 wiring error — the cooker is incorrectly connected.
- Cracked induction glass or a cracked, warped, or rusting French-top plate.
- Burner cap or grate corrosion, a stiff knob, or a teppanyaki that won’t heat.
See our error code directory for E2, U400, “Er,” and “U” diagnostics.
Maintenance essentials
- Season the cast-iron French Top and dry it thoroughly to prevent rust.
- Clean induction glass with a dedicated ceramic cooktop cleaner — never abrasives.
- Keep burner caps seated correctly and clear ports with a pin.
- Empty and clean grill drip trays and replace lava rocks as needed.
- Polish brass trim and check knobs for smooth operation.
Professional La Cornue cooktop service
Cooktop repairs range from gas valves and igniters to induction coils and ceramic glass — work for certified technicians familiar with French rangetop modules. We carry common parts, honor the 5-year parts and labor warranty where applicable, and quote repairs from $X. Schedule La Cornue cooktop repair or book online.
