Display shows an over-temperature or thermal cutout error; oven shuts off during use.

Safety first: Allow the oven to cool completely and disconnect power before accessing internal components.

• 1. Check ventilation: Ensure that the La Cornue oven has the required clearance around cabinetry and that vents are not blocked.
• 2. Inspect cooling fan: Access the top or rear of the oven to locate the cooling fan. Confirm that it runs during a bake cycle. If not, test and replace the fan motor as needed.
• 3. High-limit thermostat: Locate the thermal cutout or high-limit thermostat (often mounted on the top of the oven cavity). Test for continuity when cool. If open and not resettable, replace it.
• 4. Control board location: Verify that insulation or wiring has not shifted to block airflow around the control board. Correct any obstructions.
• 5. After repair: Clear the error by disconnecting power for several minutes, then test the oven under normal use.