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

E8206Thermador Induction Cooktop E8206 Sensor Failure F0Older Thermador Cooktop F0 on CIT365DS and CIT304E Induction Models: Internal Error (Not the Current Meaning) E9000Thermador Cooktop E9000 / E9010 Voltage Error Code F2Legacy Thermador Cooktop F2 for CIT365DS and CIT304E Induction: Element Too Hot (Older Generation) E9011Thermador Induction Cooktop E9011 Connection Error F4Thermador Cooktop F4 on Older CIT365DS and CIT304E Induction Models: Pan Too Near the Touch Panel F0Thermador Induction Cooktop F0 Error Code (MoveMode) F8Thermador Cooktop F8 on Older CIT365DS and CIT304E Induction Units: Element Ran Too Long, Auto Shut-Off

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.