Oven interior light and fan come on, but oven does not heat in any mode

Safety first: Disconnect power at the breaker before accessing rear panels or internal wiring.

• Check high‑limit devices: Locate thermal fuses and high‑limit thermostats on the oven top or rear. Test for continuity and replace any open devices with La Cornue‑approved parts.
• Inspect selector switch: On manual control models, verify the oven function selector turns smoothly and that its contacts are not burned. Replace if defective.
• Control board: On electronic models, if all safety devices are good, the main heating relay on the EOC may have failed and the board will need replacement.