La Cornue has built ranges by hand in France since 1908, and its signature vaulted gas oven circulates heat in a way no other range quite matches. In Boulder's finest kitchens a La Cornue is often the centerpiece, and it deserves a technician who treats it as the handcrafted object it is: careful with the brass and enamel, and methodical with the mechanical systems underneath.
Models We Service
- Chateau series ranges with vaulted gas ovens
- Grand Palais flagship ranges
- CornuFe range cookers
- Gas, dual-fuel, and electric-oven configurations
- Custom burner and griddle/plancha modules
Error and Fault Codes
La Cornue ranges are largely mechanical and do not present numbered fault codes. We diagnose symptom to cause, testing ignition, the oven thermostat and burner, and the electrical controls directly. The table shows how we approach the most common complaints.
| Symptom | Likely Cause | What We Do |
|---|---|---|
| Burner will not light | Fouled igniter or blocked port | Clean and align, verify spark and gas flow |
| Oven temperature drifts | Thermostat or oven burner fault | Verify cavity temp, inspect burner and thermostat |
| Uneven baking | Oven burner or vault airflow | Check burner pattern and airflow, adjust or repair |
| Weak flame | Blocked orifice or low gas flow | Clear orifice, verify supply and valve |
| Electric controls dead | Switch, thermostat, or wiring fault | Test the circuit, replace the failed component |
Common Problems We Fix
Because La Cornue is mechanical at heart, its faults are mechanical: igniters and burner ports that foul, orifices that partially block, thermostats that drift, and the vaulted oven burner whose flame pattern shapes how the range bakes. Electric-oven configurations add elements and controls that fail like any oven. The work is as much about respect as repair; we protect the finishes, keep the range's character intact, and source genuine OEM parts so a repair preserves rather than compromises a piece that was built to last for generations.
Maintenance and Guides
See our La Cornue maintenance guide for burner and finish care, and our high-altitude cooking tips for Boulder kitchens.
La Cornue Needing Attention?
Book a La Cornue diagnosis. Diagnostic and travel fees, if applicable, are confirmed before the appointment and before repair approval.