Handcrafted, and Code-Free
La Cornue ranges are built by hand and configured to individual specifications, and they do not present consumer numeric fault codes. So an oven that will not heat is diagnosed by reading its behavior: whether it lights at all, how it heats, and whether the problem is no heat or uneven heat. That observation guides the diagnosis.
Because configurations vary, including the vaulted gas oven and other setups, knowing exactly how your range is built is part of an accurate diagnosis.
Gas and Electric Causes
On a gas oven, the usual causes of no heat are a bake igniter that has weakened until it no longer opens the safety valve, or a fault in the gas valve itself. The igniter can still glow while failing to draw enough current, so it needs testing under load rather than judging by eye. On electric-equipped configurations, a failed heating element or a drifting control is the likely cause. Uneven heat points more toward airflow, calibration, or an element heating unevenly.
We diagnose according to how your specific range is configured, testing the ignition, valve, or element with care for the finishes.
Symptom Reference
| Symptom | Likely Cause | What We Do |
|---|---|---|
| Gas oven will not light | Weak igniter or gas valve | Test under load, service |
| Electric oven cold | Failed heating element | Test and replace element |
| Uneven heat | Airflow or calibration | Diagnose airflow, verify calibration |
| Slow to heat | Aging igniter or element | Replace the failing part |
A Weak Gas Igniter Looks Like It Works
A gas oven igniter can glow while failing to draw enough current to open the valve, so an oven that will not heat should have the igniter tested under load, not judged by sight.
Book a Repair with a Specialist
Diagnostic and travel fees, if applicable, are confirmed before the appointment and before repair approval.