- Appliances
- Cooktops
F8
Bosch F8 on induction cooktop: automatic time limit
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Low
Quick answer
Your Bosch induction cooktop shows F8 (with H or h) and the zones do not heat because a zone ran for a long time without you touching anything. Touch any control on the cooktop, set the zone again and keep cooking.
Safety first
Stop and check this first
- F8 cuts the zone so a forgotten pot does not keep heating. Do not try to work around this limit; during long cooking, check the pot from time to time.
Safe checks you can perform
- Reactivate with any control
- Check the dish in progress
- Repeats during long cooking
Leave these tasks to a qualified professional
- Do not attempt this professional task: Check if F8 appears in short use
- Do not attempt this professional task: Function test after the check
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Check if F8 appears in short use
What they doBosch service checks the cooktop control if F8 triggers without extended use.
They must show youthe warning reproduced in short use.
In writingthe check and any replaced part with its reference.
Function test after the check
What they doThe technician checks that the zone heats and responds to the controls normally.
They must show youthe zone heating without F8.
In writingthe test result.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Reactivate with any control
- Who:
- you.
- How:
- touch any control element on the cooktop, as Bosch instructs, and set the cooking zone again.
- Result that matters:
- the message clearing and the zone heating again.
- If it heats again:
- it was the automatic time limit, not a fault.
- If the zone does not respond after touching the controls:
- switch the cooktop off at the breaker for a few seconds and, if nothing changes, call Bosch service.
- Evidence to keep:
- a note of how long the zone had been on.
Evidence: Bosch Induction Cooktop Error Codes
Check the dish in progress
- Who:
- you.
- How:
- check the pot: if the zone had been on a long time, make sure it has not run dry before resuming.
- Result that matters:
- resuming safely.
- If everything is fine:
- keep cooking and touch the controls now and then during long cooking.
- If the pot was empty or burnt:
- switch it off and let it cool before handling it.
- Evidence to keep:
- nothing special if solved; a photo if there was damage.
Evidence: Bosch Induction Cooktop Error Codes
Repeats during long cooking
- Who:
- you.
- How:
- if you often cook for a long time without touching the cooktop, check your model's manual for the time limit and the timer function.
- Result that matters:
- knowing whether F8 will keep appearing in your cooking.
- If it only appears in very long cooking:
- that is the intended behavior.
- If it appears in short use:
- that does not fit Bosch's description and service should be told.
- Evidence to keep:
- notes of cooking duration when it appeared.
Evidence: Bosch Induction Cooktop Error Codes
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- Bosch
- Product type
- Cooktops
Known code variants
- Bosch F8
- Bosch induction F8
- F8 H
- placa inducción Bosch F8
What it means
Bosch explains that F8 with H or h, and zones not heating, appears when a cooking zone has been operating continuously for an extended period without interaction. The automatic time limitation is then triggered, a safety function that cuts the zone if nobody uses it. It is not a cooktop fault: the control has applied a planned limit. Touching a control is enough to set the zone again.
Warnings and stop conditions
- Loweditorial warning
F8 cuts the zone so a forgotten pot does not keep heating. Do not try to work around this limit; during long cooking, check the pot from time to time.
Evidence: Bosch Induction Cooktop Error Codes
Symptoms and causes
Probable causes · in order
- Zone on for a long time without touching the controlsConfirmed
It usually happens in long stews at a fixed power; F8 shows with H or h and the zone stops heating.
Evidence: Bosch Induction Cooktop Error Codes
- Zone left on by mistakePossible
Nobody was cooking and the zone stayed on; the time limit has cut it for safety.
Evidence: Bosch Induction Cooktop Error Codes
Virtual technician
Does F8 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Bosch Induction Cooktop Error Codes
Bosch · 2026 · official_doc
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