Thermador Cooktop F5: Hot Cookware Near the Controls

What F5 means

A hot pot sits close to the touch strip and the cooktop answers with F5. Thermador describes two versions on both platforms: in one the power-level number flashes and the zone keeps running while the electronics risk overheating; in the other a tone sounds and the zone is switched off completely. Both are protection for the control panel.

Usual causes of F5

A pot or pan resting against or over the control strip
Large cookware on a zone close to the control panel edge

✓ A safe check worth trying

1. Take the pan off the heat using oven mitts. 2. Slide cookware away from the control strip, or move it to a different zone. 3. If the tone sounded and the zone shut off, wait a short while. 4. Touch a control element to resume.

! Why you should stop here

F5 is a designed safeguard, so working around it by leaving cookware near the panel invites heat damage to the electronics over time.
Cookware that overlaps the strip regularly can also discolor or stress the glass and controls beneath it.

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

F9Thermador Induction Cooktop F9 Error Code (Flex Zone) c2 / c3Legacy Thermador Cooktop c2 / c3 on CIT365DS and CIT304E Induction Units: Element Overheated, Deactivated U400Thermador Cooktop U400 Voltage Error Code U400Older Thermador Cooktop U400 on CIT365DS and CIT304E Induction Models: Cooktop Connected Incorrectly E7015Thermador Cooktop E7015 on Current Masterpiece and Freedom Induction Models: Electronics Overheated 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)

F5F5 questions

My pan is not touching the panel, so why did F5 appear?

The strip can sense heat from nearby cookware even without contact. Pull the pan further from that edge or use a smaller pan and the alert should stop.

Does F5 mean the cooktop is broken?

No, it means the cooktop is guarding its own controls. Once the cookware is repositioned and things cool, it normally works again without any repair. Reposition the pan, let things cool and carry on cooking without any repair visit.

Can I ignore the flashing number if the zone still heats?

Better not. The flashing warns that the electronics are close to overheating, so move the cookware sooner rather than later. Move the pan right away, since the electronics are being heated more than they are meant to be.