The La Cornue range top is the modular cooking surface, and because it can carry brass gas burners, the cast-iron French Top, a lava-rock grill, induction zones, an electric Teppanyaki plate, and the Flamberge gas rotisserie on one hob, its faults are diagnosed module by module. Gas modules show physical indicators: ignition that will not catch, a clicking spark module from a wet or dirty electrode, a yellow flame from a misadjusted air shutter or an LP/NG mismatch, and stiff or worn knobs. There is no code on a gas module — it is read by flame quality and meter.
How La Cornue range top faults are diagnosed
Induction modules, in contrast, use codes. A flashing U means no or an incompatible pan — or a failed coil or sensor if the pan is correct and other zones work. E2 appears when the electronics overheat or a pan boils dry, U400 flags an incorrect supply connection, and the H indicator confirms residual heat on a zone. An Er code reflects an internal fault. The technician reads any stored code first, then verifies the affected zone against a known-good pan.
Module-specific service
The French Top can crack, warp, or rust if it is not seasoned and kept dry; the grill module clogs or needs fresh lava rocks; the Teppanyaki plate can stop heating; and a Flamberge rotisserie can develop a motor or gas fault. Leaking valves, hob discolouration, loose or worn knobs, and corroded drip trays or grates are also serviceable. We match each module’s parts to your specific rangetop configuration, since one hob may combine gas, induction, and a French Top that each demand a different repair discipline. The cast-iron and brass surfaces are restored with correct care so the finish is not scarred in the process. Schedule a range top repair (from $X), or review the module layouts in the model lineup.