What F8 means on your Asko cooktop (asko cooktop f8)
F8, displayed on some units as F08, is a problem on the F-series induction family (HI1655M and related boards) and is an electrical safety matter, not a cooking issue. The manual’s stated cause is that the appliance is connected incorrectly, or mains voltage is too high, and the fix given is to have the connection changed. Because this problem sits at the boundary between the hob and the home’s electrical supply, it should be treated as a wiring or supply problem first, and a component problem only after that is ruled out. This is exactly the kind of problem an owner should not attempt to clear by resetting the breaker repeatedly.

Symptoms
The symptoms below are the ones that pin this problem on your Asko cooktop rather than a similar-looking problem elsewhere in the machine. A cooktop can show them one at a time or all together, slowly over weeks or suddenly after a surge, a spill, or a recent install-and-test.
- F8 or F08 appears at power-on or shortly after the hob is switched on.
- The problem can appear immediately after a new installation or after electrical work in the kitchen.
- Zones may refuse to activate at all while the code is showing.
- Other appliances on the same circuit may show voltage-related symptoms of their own, such as flickering lights.
Common causes
There is rarely a single obvious cause on an Asko cooktop, so the possibilities below are sorted from probable to unlikely. Testing them in that order tells you whether your cooktop needs a simple adjustment or a repair with genuine OEM or trusted-supplier parts.
- Incorrect wiring at installation — the hob’s terminal block has been connected in a way that does not match the required configuration for the home’s supply.
- Mains voltage running higher than the hob’s rated range — a supply issue upstream of the appliance rather than a problem inside it.
- A loose or corroded terminal connection — poor contact at the terminal block can present as a voltage or connection problem.
- A mismatch between the hob’s configuration and the home’s single-phase or multi-phase supply — set incorrectly during installation.
Troubleshooting steps you can try
Before you call for service, try each step on your Asko cooktop in turn and watch how it responds. If a step on the cooktop takes you near mains wiring, gas, a hot oven cavity, water, or a sealed component, stop and pass it to a qualified technician.
- Switch off the hob at the wall or breaker; do not keep restarting it to try to clear F8.
- Do not open the terminal block or attempt any wiring change; this problem involves mains voltage.
- Note whether other appliances in the kitchen show unrelated electrical symptoms at the same time, and mention this to whoever inspects the hob.
- Confirm with your electric utility or an electrician whether supply voltage has been reported as unusually high in the area.
- Book a licensed technician or electrician to inspect the hob’s connection before using it again.
Parts a technician may replace
For a problem like this on your Asko cooktop, a technician may end up inspecting, testing, or replacing the mains connection, wiring terminals, and incoming power supply. Genuine OEM or trusted-supplier parts are fitted to the cooktop, matched by its model, serial, and Art. No., so your cooktop keeps its performance and safety rather than being compromised by a generic substitute.
When to call a technician
A technician measures incoming line voltage at the hob’s terminal block and confirms the wiring configuration matches the appliance’s rated supply before re-energizing it. Rated High severity, this problem means your Asko cooktop should be taken out of use until a technician has looked at it, and the cooktop’s supply shut off at once if there is any sign of overheating, burning smell, or leaking. We handle your Asko cooktop as an independent service with no affiliation to Asko, Gorenje, or Hisense, working only with experienced technicians and genuine OEM or trusted-supplier parts, and we back the labor on your cooktop with a 30-day warranty. Read the model, serial, and Art. No. from your Asko cooktop when you book, because matching the exact part for the cooktop beforehand is how F8 gets resolved in the fewest visits.
Related help and Asko resources
If F8 lingers on your Asko cooktop after these steps, book Asko cooktop repair, browse our collection of cooktop error-code guides, follow our step-by-step repair guides, schedule service for a call-out, or look up your region on our locations page. Manufacturer documentation and specifications for your Asko cooktop are hosted at global.asko.com.