Thermador Induction Range Cooktop F1 / F6: Cooking Zone Overheated

What F1 / F6 means

F1 or F6 on the induction side of Thermador Pro Harmony PRD...WIGU, PRI and Masterpiece MRI304DL ranges means a cooking zone has overheated and switched itself off to protect the work surface. It often comes from an empty or warped pan left on the zone. Other Thermador generations use F1 and F6 for different problems.

Usual causes of F1 / F6

Cooking zone overheated

✓ A safe check worth trying

1. Take the pan off the zone and turn the zone off. 2. Let the glass cool. 3. Check that the pan base is flat and was not empty. 4. Touch a control to clear the message and try a lower setting. If it recurs with normal cookware, call us.

! Why you should stop here

Repeated overheating may point to a sensor issue.
Testing needs access under the glass.
We quote in writing.

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 Range codes

E5Legacy Pro-Harmony Thermador Range E5 Means Potentiometer Failure (Light Code 21) F9Legacy Thermador ESC30/GSC30 Range with F9: Door Latch Supervisory Error E6Thermador PDR/PRG Range E6, Blue Lights 3-then-2: Over Temperature While Cooking F1Legacy RDF/REF 30-Inch Range F1: Stuck Buttons or Latch Switch E7Cleaning Cycle Stopped by E7 on a Legacy Thermador Pro-Harmony Range (Code 23) F3Legacy RDF/REF 30-Inch Range F3: Open or Shorted Oven Sensor E9Legacy Thermador Range E9: No Cooling Fans, Blue-Light Code 43 E7010Thermador Induction Range Cooktop E7010: Wi-Fi or Hood Connection Lost

F1 / F6F1 / F6 questions

Is F1 a broken cooktop?

Not by itself. The manufacturer text describes a protective shutoff to guard the work surface, which can follow ordinary misuse such as heating an empty pan.

Could my pan be the cause?

Yes. An empty, thin or warped pan can overheat the zone quickly. Try a different pan with some food or liquid in it before assuming a repair is needed.

When should I call?

If the message appears with ordinary cookware and moderate settings, or keeps returning after the glass cools, call us so we can check the zone.