Thermador Cooktop F8 (H/h) Automatic Time Limit

What F8 means

A zone you left cooking quietly turns itself off and F8 appears, sometimes alongside H or h. Thermador explains it the same way on both cooktop platforms: the automatic time limit kicked in because the zone ran for a long period without anyone touching a control. It is a built-in timeout, not a sign of damage.

Usual causes of F8

A lengthy cook with no adjustments to the controls during that time

✓ A safe check worth trying

1. Make sure whatever was cooking is safe and not scorching. 2. Touch any control element on the cooktop. 3. Set the zone again as needed and carry on cooking. 4. Next time, tap the setting now and then during a very long cook.

! Why you should stop here

Nothing is wrong with the hardware, so a service call would only confirm that the safety timeout worked.
Adjusting a zone every so often during a very long cook avoids the interruption altogether.

Taking off a panel yourself does not by default void a manufacturer warranty, yet it can lead to accidental damage, and some manufacturers attach their own service terms. Read your warranty paperwork, or ask us, before you decide.

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More Cooktop codes

E8207Thermador Cooktop E8207, Current Masterpiece and Freedom Induction: Zone Shut Off, Electronics Hot E8208Thermador Cooktop E8208 on Current Induction Models (Masterpiece/Freedom): Overheated Electronics F0Legacy Thermador Cooktop F0 on Older CIT365GB-Series Induction Units: Cooking Sensor Defective (Older Meaning) F2Older Thermador Cooktop F2 on CIT365GB-Series Induction Units: Element Too Hot (Not the Current Meaning) F3Thermador Cooktop F3 on Older CIT365GB-Series Induction Units: Cooking Sensor Too Hot (Legacy Meaning) F4Older Thermador Cooktop F4, CIT365GB-Series Induction: Pan Too Close to Control Panel (Legacy) F8Legacy Thermador Cooktop F8 on CIT365GB-Series Induction Units: Automatic Shut-Off After Long High-Power Use E8205Thermador Induction Cooktop E8205 Sensor Connection Lost

F8F8 questions

Will F8 return the next time I cook for hours?

Yes, if a zone again runs a long stretch with no touch on the controls. It repeats by design, so it is a feature of the cooktop rather than a one-off glitch.

What do the H and h marks mean beside F8?

They belong to the display for the same situation, a zone that is still hot or has been shut off by the limit. Touching a control clears the message either way.

Is it safe to restart the zone right away?

Yes, after you check the food and the pan. The zone can be reset immediately and keeps working normally once a control has been touched.