La Cornue is the oldest name we service, a French maker of handcrafted ranges built one at a time since 1908. When a La Cornue turns up in a Erie home, it is usually the centerpiece of the kitchen, a CornuFe or a made-to-order Chateau finished in a chosen enamel color and trim. These ranges are engineered to be repaired and to last for decades, which is exactly the right philosophy for us: a fault is almost always a single mechanical part, not a reason to replace the range.
Because a La Cornue is largely electromechanical, it does not publish a numeric fault-code system the way GE-based or Bosch controls do. There is no display throwing an F-code or an E-code. Instead we diagnose it the way it was built to be diagnosed, by symptom, cause and fix: we test the igniter, the thermocouple, the gas valve, the oven thermostat and the element directly with a meter and a thermometer, then confirm the failed part before ordering it. We tell you the parts timeline up front, because low-volume components can take longer to arrive, and we protect the enamel and brass while we work.
Models We Service
- CornuFe: the CornuFe 90 and CornuFe 110 dual-fuel and all-gas ranges.
- Chateau: the made-to-order Chateau series in 90, 120, 150 and larger widths, with gas and electric ovens.
- Grand Palais: the flagship multi-oven ranges with vaulted gas and convection ovens.
- Cooktop options: gas burners, the flame-grill, the simmer plate (plaque coup de feu), and induction where fitted.
Diagnosis by Symptom, Cause and Fix
La Cornue does not use numeric error codes, so instead of a code table we work from a symptom table. This is how we approach the faults we see most often, confirming each cause with a direct test before we repair.
| Symptom | Likely Cause | What the Fix Involves |
|---|---|---|
| Burner clicks but will not light | Dirty or wet igniter, misaligned cap, weak spark | Clean and align the burner, test and replace the igniter or spark module |
| Burner lights then goes out | Failing thermocouple or flame-supervision safety | Test the thermocouple and safety valve, replace the failed part |
| Oven runs hot or cold | Drifting thermostat, weak burner, blocked orifice | Compare cavity temperature to setting, recalibrate or replace the thermostat |
| Electric oven not heating | Failed bake or convection element, open thermostat | Test the element and thermostat for continuity, replace the failed part |
| Uneven flame or low output | Partly blocked burner ports or incorrect gas orifice | Clean the ports, verify the orifice matches the gas supply |
| Oven door will not seal or seat | Worn gasket, sagging hinge, misaligned door | Replace the gasket, adjust or replace the hinge, re-seat the door |
Common Problems We Fix
- A cooktop burner that will not light or will not stay lit
- An oven that no longer holds the set temperature
- A simmer plate that runs too hot or too cold across its zones
- A convection fan that has grown noisy or stopped
- A worn oven-door gasket letting heat escape
- Brass or steel trim and knobs that need replacement after years of use
- Gas smell or a burner that hisses, always treated as a safety-diagnostic visit
Built to Be Repaired, Not Replaced
A La Cornue is designed so individual parts come out and go back in. When a burner or thermostat fails after twenty years, that is the range working as intended. We restore the part rather than pushing you toward a replacement that would cost many times more.
La Cornue Not Performing as It Should?
Book a diagnosis and we will find the cause and give you a written estimate. Diagnostic and travel fees, if applicable, are confirmed before the appointment and before repair approval.
Maintenance and Guides
Related
Range Repair
Burner, oven and thermostat faults.
Cooktop Repair
Gas and induction cooktops.
Wolf Repair
Compare pro-range platforms.
Viking Repair
Another gas-range specialist.
Burner Not Igniting
Why burners fail to light.
Oven Not Heating
Where oven heat faults start.