An oven heats at first, then shuts down unexpectedly

Record whether the selected cooking mode disappeared, the display went dark or an error appeared while the screen stayed on. Note the elapsed time and whether a cooking timer or end-time setting was active. A completed timed program differs from an unexpected loss of operation, even if both leave the oven no longer heating.

Review the model’s normal timer and door instructions without entering diagnostic menus. Thermador notes that an improperly closed door can affect starting or continuing operation. If the door closes normally and the appliance repeatedly stops during familiar cooking, describe that pattern instead of restarting it for another high-temperature trial.

Tell the technician about any cooling-fan change, blocked visible vent or recent cabinet work. Do not remove surrounding trim to improve airflow or reset a repeatedly tripping breaker. Internal temperature protection, controls and the electrical supply require qualified assessment. The point at which operation stops is useful evidence, but it does not establish which part should be replaced.

Useful observations before you call

• Save the mode, target setting and approximate time before shutdown.
• Record whether the clock and lights remain active after heating stops.
• Mention any message, unusual smell or household circuit interruption.

Model-specific reference: Thermador owner support. Features and procedures vary; follow your appliance manual.