⚠️ Induction Cooktop Not Working? Troubleshooting & Error Codes
On this page 12 sections
- "No pan detected" or the zone won't heat
- Cooktop won't turn on at all
- Zone cuts out mid-cook
- Error codes (E1, E2, F codes, and similar)
- Buzzing or clicking noise
- When to call a technician
- Start here: the two-minute checklist
- Reading error codes without the manual
- The power-cycle that actually resets things
- Symptom-by-symptom
- When it's a service call — and what to have ready
- Frequently asked questions
Before booking a service call, it's worth running through these common induction cooktop issues — most have a simple, safe fix you can check yourself.
The short answer
Most induction faults aren't faults. In rough order of likelihood, a cooktop that won't heat is dealing with a non-magnetic or undersized pan, a wet or greasy control panel, an engaged child lock, a tripped breaker or safety switch, or a blocked cooling vent causing a thermal cut-out. Work through those five before calling anyone. Genuine inverter failures exist, but they are much rarer than the internet suggests.
"No pan detected" or the zone won't heat
By far the most common issue. Check that your cookware is actually induction-compatible (see our cookware guide for the magnet test) and that the pan base covers enough of the zone — small, off-centre, or warped pans can fail to register even if the material itself is magnetic.
Cooktop won't turn on at all
- Confirm the child lock isn't engaged — usually indicated by a lock icon, cleared with a press-and-hold combination specific to your model
- Check the circuit breaker or power point hasn't tripped, particularly after a storm or power fluctuation
- Make sure the surface is completely dry — some models won't respond to touch controls if water has pooled near the sensor area
Zone cuts out mid-cook
Most induction cooktops have built-in overheat protection that pauses a zone if the cookware or cooktop surface gets too hot, and a maximum continuous-use timer per zone (often one to three hours) as a safety default. This isn't a fault — it's designed, intentional behaviour to prevent unattended overheating.
Error codes (E1, E2, F codes, and similar)
Exact codes vary by brand and model, but common categories are: a power supply or voltage fault, an overheating sensor trip, a pan-detection fault, or a control board communication error. Check your specific model's manual — searchable by brand plus "induction cooktop manual" — for the exact meaning of a given code, and don't attempt to diagnose internal electronics yourself unless you're a licensed electrician.
Buzzing or clicking noise
A faint hum or click during normal operation is expected — it's the induction coil's driving electronics at work. Loud buzzing that changes noticeably with pan position usually means the cookware base isn't fully flat, or isn't sufficiently induction-grade, rather than a fault with the cooktop itself.
When to call a technician
If the cooktop repeatedly trips your circuit breaker, shows a persistent error code after a full power cycle, or has a cracked or visibly damaged glass surface, stop using it immediately and contact a licensed technician or the manufacturer's service line — these are genuine safety issues, not DIY fixes, and continuing to use a damaged cooktop carries real risk.
Start here: the two-minute checklist
- Does a magnet stick firmly to the pan base? If not, the cooktop is working correctly and the pan is the problem.
- Is the pan base at least ~12cm across and flat? Undersized or warped bases cause intermittent detection.
- Is the control panel dry and grease-free? Most cooktops lock out when they sense liquid on the touch surface.
- Is the child lock on? Look for a padlock icon or a key symbol; the unlock gesture is model-specific.
- Is the circuit live? Check the breaker and the safety switch at your switchboard, not just the wall switch.
- Is the demo or showroom mode on? Some cooktops ship in a display mode that lights up but never heats. It's rare, but it fools people for days.
- Are the vents clear? Blocked airflow triggers a protective shutdown that looks like a fault.
Reading error codes without the manual
Error codes are not standardised across brands — an E4 on one cooktop means something different on another, so a code looked up on a forum for the wrong brand will send you down the wrong path. Always check your own model's manual, and if you've lost it, the manufacturer's Australian support site will have a PDF.
That said, codes cluster into families, and knowing the family tells you whether to act or call:
| Family | Usually indicates | What to do |
|---|---|---|
| No-pan / pan-detection | Missing, non-magnetic, undersized or warped pan | Swap to a known-good magnetic pan sized to the zone |
| Overheat / thermal | Electronics or glass too hot; airflow restricted | Switch off, let it cool fully, clear the vents, check clearances below |
| Voltage / supply | Supply outside the cooktop's accepted range | Check the switchboard; persistent codes need an electrician |
| Control panel / touch | Liquid, grease, or a stuck key on the panel | Clean and dry thoroughly, then power-cycle |
| Internal / inverter | A genuine component fault | Note the code and call authorised service |
The power-cycle that actually resets things
Switching off at the front panel does not reset the electronics — it just stops cooking. A real reset means isolating power at the isolation switch or the circuit breaker for a minute or two, then restoring it. That clears many transient control-board faults, and it's the step service technicians ask about first.
If a fault returns immediately after a full power-cycle, it is very likely genuine. If it clears and stays away, it was transient — worth noting the date and code in case a pattern emerges.
Symptom-by-symptom
One zone works, another doesn't. Try the failing zone with a pan you know works on the good zone. If it still fails, and a power-cycle doesn't fix it, that points to a failed inverter module for that zone pair — a service call. If it works, the original pan was too small for that particular zone.
The cooktop cuts out after a few minutes at high power. Classic thermal protection. Check that the ventilation slots are clear and that whatever sits below the cooktop hasn't been packed with stored items. Ambient heat matters too — a hot Australian kitchen with a full underbench oven running below is a genuinely harder environment for the electronics.
The fan keeps running after I switch off. Normal. The cooling fan runs on to bring the electronics down to temperature and stops on its own, sometimes after several minutes.
Buzzing, humming or clicking. Buzzing is usually the layers of a multi-ply pan vibrating in the field — louder at high power, quieter with heavier pans. Clicking at low settings is often the inverter cycling power. Neither is a fault. A new or worsening noise, especially a rattle, is worth reporting.
Controls respond but nothing heats, on every zone. After ruling out cookware and demo mode, this often points to supply: a cooktop on a multi-phase or split supply can lose one leg, leaving the display alive while the heating side is dead. That's an electrician's job.
When it's a service call — and what to have ready
Call authorised service if a fault persists after a full power-cycle, if the glass is cracked or chipped (stop using it immediately — it's both an electrical and a physical hazard), if you can smell burning or see scorching around the vents, or if the breaker trips whenever the cooktop is switched on. That last one is an electrical fault, not a cooking problem, and repeatedly resetting the breaker is not a safe workaround.
Have ready: the model and serial number from the rating plate (usually underneath, so photograph it at installation rather than pulling the cooktop out later), the exact error code, what you'd already tried, and your proof of purchase and installation compliance certificate. Remember that Australian Consumer Law statutory guarantees apply regardless of the manufacturer's warranty period — a cooktop that fails prematurely may still entitle you to a remedy even if the printed warranty has expired.
Frequently asked questions
Is it safe to keep using an induction cooktop that shows an intermittent error?
Not recommended — an intermittent fault can indicate a developing electrical issue. Get it checked by a licensed technician rather than continuing to use it and hoping it resolves itself.
Why does my cooktop only work with some of my pans?
This is almost always a cookware compatibility issue, not a cooktop fault — see the magnet test in our cookware guide to confirm which of your pans are actually induction-rated.
Can a power surge damage an induction cooktop?
Yes, significant voltage spikes can potentially damage the internal inverter electronics — a surge-protected circuit or whole-home surge protection is a reasonable precaution, particularly in areas prone to grid fluctuations.
Why does my induction cooktop keep turning itself off?
The two common causes are thermal protection and pan detection. If it happens at high power after several minutes, the electronics are overheating — clear the ventilation slots and check what is stored below. If it happens quickly or randomly, a warped or undersized pan is intermittently dropping out of detection. Cooktops also have a maximum-run-time safety cut-off, which triggers if a zone is left on for hours.
My induction cooktop shows an error code that is not in the manual. What now?
Photograph the display and the rating plate, then contact the manufacturer’s Australian support line with both. Codes are brand-specific and some are diagnostic codes intended for technicians rather than owners, so a forum answer for a different brand is worse than no answer.
Can I fix an induction cooktop myself?
You can do everything on the checklist above — cookware, cleaning, child lock, resetting the breaker, clearing vents. You cannot open the appliance. Anything behind the glass involves mains-voltage components and high-voltage capacitors that hold charge after disconnection, and opening it voids the warranty.
Is a cracked induction cooktop still safe to use?
No. Stop using it and isolate it at the switchboard. A crack lets liquid reach live electrical components beneath the glass, and the glass itself can fail further under the thermal stress of cooking. This applies to chips around the edge as well as visible cracks across the surface.
Sources & further reading
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