Range High Severity
F4 Appliance Error Code

Asko Range F4 Error: Induction coil fault

Asko range F4 error is a common issue reported by Asko appliance owners. What Does Asko Range Error Code F4 Mean? F4 indicates a hardware fault in one of the induction coils or its inverter drive circuit on the range cooktop surface. Asko ranges share their cooktop inverter platform with standalone induction cooktops; F4 is […]

By Denys Mitchell Lead Appliance Repair Specialist & Technical Writer

No

DIY Fixable

From $150

Typical Repair Cost

60-90 min

Pro Repair Time

Quick Assessment

Answer to continue safely

Is it safe to keep using?

Maybe. Unaffected induction zones and the oven section can be used normally. The zone displaying F4 must not be used as it lacks a functional heating circuit.

Can I reset the code?

Yes. A power-cycle clears the F4 display. On a hardware coil or IGBT fault, F4 will return the moment the affected zone is next activated.

When to stop immediately?

Stop if you notice: Stop using the affected zone immediately and do not attempt to reset it repeatedly., Cease all cooktop use if F4 is accompanied by a burning plastic smell from under the range..

Symptoms You May Notice

One induction zone will not heat at all

A specific cooktop zone on the range shows F4 and refuses to activate regardless of which compatible pan is placed on it.

F4 displayed when affected zone is selected

Touching the power button for the affected zone causes F4 to display immediately, with no pan detection clicking and no heat output.

Humming or buzzing from beneath affected zone

In a partial coil fault the zone may attempt to energise, producing an unusual humming or buzzing sound louder than normal induction operation before F4 is logged and the zone shuts down.

Other zones operate normally

The remaining induction zones on the range cooktop surface function correctly, confirming the fault is isolated to the specific zone coil or its dedicated inverter stage.

Possible Causes

1

Failed inverter IGBT

The high-power switching transistor driving the zone coil has failed short or open circuit, preventing the zone from generating an alternating magnetic field.

Requires Professional
2

Open or shorted coil winding

Physical damage to the coil winding — from impact, liquid ingress, or electrical stress — causes the coil to read out of specification during the power board self-test.

Requires Professional
3

Liquid ingress via cracked glass

A crack in the glass ceramic above the zone allows cooking liquids to reach the coil assembly, causing shorts or corrosion in the coil wiring.

Requires Professional

Safe Checks You Can Do

These checks are safe for homeowners. No disassembly required. Do not remove panels or access internal components.
  1. 1

    Identify the affected zone

    Test each induction zone one at a time with a cast iron pan. Note the exact position (front left, rear right, etc.) of the zone that displays F4. Use the remaining zones normally while awaiting service.

    Record whether F4 appears immediately on zone selection or only after a few seconds of attempted heating — this helps the technician differentiate an IGBT fault from a coil fault.

  2. 2

    Inspect glass surface for cracks

    Carefully inspect the glass ceramic surface of the affected zone for cracks, chips, or discolouration. Run a clean white cloth over the surface and check for staining that indicates a liquid has penetrated the glass. Do not use a cracked cooktop surface under any circumstances.

    Even a hairline crack invisible from above may be visible when a torch is shone at a low angle across the glass surface.

  3. 3

    Power-cycle and retest

    Turn the range breaker off for 10 minutes, then restore power. Attempt the affected zone with a cast iron pan. If F4 returns within seconds of zone activation, the fault is hardware-level and requires a technician — do not attempt further resets.

    If the zone works briefly then produces F4 under cooking load, an IGBT that is failing under thermal stress is the most likely cause.

When to Call a Professional

Contact a qualified technician if:

  • F4 returns within seconds of activating the zone after a full power reset.
  • Any crack, chip, or evidence of liquid ingress in the glass ceramic above the affected zone.
  • Burning smell from the underside of the cooktop surface during or after the fault appears.

Need Professional Help?

Find qualified technicians in your area for proper diagnostics and repair.

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More Range Error Codes

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