Denys Mitchell Key Takeaways
- The code separates faults that belong to the cooktop from faults that belong to the cookware, the ventilation, or the house circuit.
- E7 means the touch panel is locked, not broken — it is the most common reason owners start pricing a replacement.
- Coil and residual heat sensor faults are inexpensive repairs on a cooktop whose glass and coils are sound.
- Cracked glass is the one fault that decides the question: the surface is no longer sealed against the electronics below.
- A diagnostic starts from $89 and is normally credited against the repair once you go ahead.
The Bottom Line
Read the code first: three of the seven Asko cooktop codes are not faults in the appliance at all. If the glass is intact and one assembly has failed, repair is the cheaper path by a wide margin — replacing an induction cooktop means countertop work, not just an appliance.
The Asko cooktop repair or replace question arrives the same way every time: a code on the display, a zone that has gone quiet, or a touch panel that ignores you. An Asko induction cooktop that throws a code, loses a zone, or refuses to respond to the touch panel puts you in front of a question that has no single answer: fix this one, or replace the whole surface. The honest version of that question starts with the code, because the cooktop has already told you which part of itself failed — and on this appliance, that distinction is the whole decision.
| Code | What the cooktop is reporting | Repair or replace? |
|---|---|---|
| E1 | Overheating — electronics or a zone above the safe limit | Neither: clear the ventilation and let it cool |
| E2 | No compatible cookware on the zone | Neither: check the pan with a magnet |
| E3 / E5 | Coil sensor or residual heat sensor fault | Repair — inexpensive parts |
| E4 | PCB communication fault | Repair, if boards are still available |
| E6 | Supply voltage fault | Electrician, not the cooktop |
| E7 | Touch panel locked | Neither: unlock it |
| — | Cracked glass | Replace — the surface is no longer sealed |
Read the code before anything else
Asko induction cooktops report faults as a single letter and a digit, and the seven codes split cleanly into two groups. Three of them describe conditions outside the cooktop — cookware, ventilation, and the supply. Four describe the cooktop itself. Before deciding anything about repair or replacement, work out which group you are in.
- Not the cooktop. E1 is overheating — the electronics or a zone exceeded the maximum safe temperature and shut down until it cooled. E2 means no compatible cookware is on the zone. E6 is a supply voltage fault, which belongs to the house circuit.
- The cooktop itself. E3 is a coil sensor fault, E4 a PCB communication fault, E5 a residual heat sensor fault, and E7 means the touch panel is locked — the one people mistake for a dead surface most often.
That last one deserves a note. A surface that lights up but ignores every touch is very often locked rather than broken, and the lock survives a power cycle on most models. It costs nothing to rule out, and it is the single most common reason an owner starts pricing a new cooktop.
The faults that are always worth repairing
Induction cooktops are built around a set of replaceable assemblies sitting under one sheet of glass. When one of those assemblies fails, the rest of the appliance is untouched — and that is what keeps the repair side ahead in most cases.
- Sensor faults (E3, E5). Coil and residual heat sensors are inexpensive parts, and replacing one restores full function to a cooktop whose glass and coils are fine.
- Touch panel faults. A panel that has stopped reading input is a module swap, not a rebuild.
- A single dead zone. Each zone has its own coil and driver electronics. One zone failing says nothing about the other three.
- Supply-side faults (E6). This one is often not a repair at all — it is an electrician's job on the circuit feeding the cooktop.
A diagnostic visit starts from $89 and is normally credited against the repair if you go ahead. The final price is confirmed after the technician has the cooktop open, never before.
Where the answer changes: the glass
Cracked glass is the fault that ends the discussion. On an induction surface the glass is not decoration — it is the barrier between the coils and everything spilled on top of them. A crack lets moisture reach the electronics underneath, and the cooktop should be switched off at the breaker and left alone until it is dealt with. Replacing the glass on a built-in induction surface is possible on some models and impractical on others, and the cost lands close enough to a new cooktop that replacement usually wins.
Deep scoring, chips at the edge of a zone, and heat marks that will not clean off are cosmetic until they reach the sealed edge. The test is simple: if the surface is no longer continuous, it is no longer sealed.
What replacement actually involves
An induction cooktop sits in a countertop cutout, which means replacing it is joinery as well as shopping. The old unit comes out, the seal comes off, the new cutout has to match, and the countertop is resealed around it. If the replacement model has different dimensions, that gap becomes a fabrication job. There is also the electrical side: these cooktops run on a dedicated circuit, and a new unit may want a different supply arrangement than the one already there.
Set against that, a sensor or a panel repair on an otherwise sound cooktop is an easy decision. The cases where replacement genuinely wins are cracked glass, several zones failing at once, and a cooktop old enough that the driver boards are no longer available.
When to call a technician
Anything behind the glass is a job for someone with the service documentation for your model. That includes every code in the second group above, any zone that has stopped working, and any fault that returns after a power cycle. If the surface is cracked, or if you can smell anything electrical, stop using the cooktop and book the visit rather than waiting to see whether it settles down.
Our cooktop repair service covers the induction range, and the same reasoning applies across the rest of the kitchen — the built-in question shows up again in our guide to repairing or replacing an Asko oven. When you are ready, schedule a diagnostic and get a real number instead of an estimate over the phone.