Legacy Thermador Cooktop F8 on CIT365GB-Series Induction Units: Automatic Shut-Off After Long High-Power Use

What F8 means

F8 here is the older generation's meaning, and it is not the time-limit message used on today's Thermador induction cooktops. On older Masterpiece models named CIT304GB, CIT304GM, CIT365GB, CIT365GM and CIS365GB, the display shows F8 when one element ran at high power for too long and the automatic shut-off stepped in. The cooktop is working as designed.

Usual causes of F8

Element run continuously at high power for a long period
Cooking session left unattended at a high setting
Automatic timer shut-off triggering as designed

✓ A safe check worth trying

1. Check that nothing on the element is burning or boiling dry. 2. Press any symbol on the control panel. 3. The display clears and you can continue cooking. 4. For long cooking, lower the power setting to avoid the shut-off.

! Why you should stop here

F8 is a normal safety timer, so there is usually nothing to repair.
If it shuts off after short cooking times, the timing control needs testing.
We tell you plainly when no repair is needed.

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

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) E + series of numbers (Er)Older Thermador Induction Cooktop "E" Plus Number Display (Er): Electronic System Error on CIT365GB, CIT304GB and CIT365DS Models E8205Thermador Induction Cooktop E8205 Sensor Connection Lost F0Older Thermador Cooktop F0 on CIT365DS and CIT304E Induction Models: Internal Error (Not the Current Meaning) E8206Thermador Induction Cooktop E8206 Sensor Failure F2Legacy Thermador Cooktop F2 for CIT365DS and CIT304E Induction: Element Too Hot (Older Generation) E9000Thermador Cooktop E9000 / E9010 Voltage Error Code

F8F8 questions

Is F8 an error?

On this older table it is an automatic shut-off after constant high-power operation, so the cooktop isn't broken. Press any symbol to carry on cooking, ideally at a lower power setting.

Why does newer Thermador literature say F8 is a time limit?

Current cooktops use their own table, where F8 is a time limitation. This page covers only the older CIT365GB-era units, where the wording is about the element running too long at high power.

How long can I cook before F8?

The manual does not give a number of minutes. It says only that the element had operated at high power constantly for too long. Lower the setting for long simmering and boiling.