Cooktop High Severity
E6 Appliance Error Code

Asko Cooktop E6 Error: Supply voltage fault

Asko cooktop E6 error is a common issue reported by Asko appliance owners. What Does Asko Cooktop Error Code E6 Mean? E6 means the cooktop’s power monitoring circuit has detected a mains voltage that is outside its acceptable operating range. Asko induction cooktops operate within a specified voltage window (typically 207–253 V for single-phase models); […]

By Lucy Crawford Senior Appliance Technician & Content Reviewer

No

DIY Fixable

From $170

Typical Repair Cost

45-90 min

Pro Repair Time

Quick Assessment

Answer to continue safely

Is it safe to keep using?

No. Do not use the cooktop while E6 is appearing until the supply voltage issue is investigated. Operating on an out-of-range voltage risks permanent damage to the inverter electronics.

Can I reset the code?

Yes. E6 clears automatically when the supply voltage returns to the acceptable range. If caused by a loose terminal, the fault will recur immediately on the next cooking session.

When to stop immediately?

Stop if you notice: Stop using the cooktop immediately if you see arcing or discolouration at any electrical connection point., Do not continue use if lights or other appliances in the kitchen flicker or dim when the cooktop is activated..

Symptoms You May Notice

All zones shut down unexpectedly under load

When multiple zones are running at high power, all zones simultaneously cut out and E6 appears as the voltage sags below the acceptable minimum under the combined electrical load.

E6 displayed at startup or under cooking load

The cooktop displays E6 either immediately on power-up (over/under voltage at rest) or only after zones are activated (voltage sag under load).

Lights in kitchen dim when cooktop is used

Visible dimming of kitchen lighting when the cooktop zones are activated indicates a supply voltage drop, often caused by undersized circuit wiring.

E6 correlates with peak household usage times

The fault occurs more frequently in evenings or when multiple high-draw appliances (dishwasher, dryer, oven) are running simultaneously, pointing to a grid or circuit capacity issue.

Possible Causes

1

Mains voltage out of range

Local grid fluctuations, particularly during high-demand periods, can push supply voltage below 207 V or above 253 V, outside the cooktop's operating tolerance.

DIY Possible
2

Loose supply terminal connection

A loose wire at the cooktop terminal block or circuit breaker introduces resistance that causes a significant voltage drop when the high-current cooktop is energised.

Requires Professional
3

Undersized circuit wiring

If the cooktop is on a circuit with inadequate wire gauge for its rated current, voltage drop under load is excessive and will trigger E6.

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

    Check other appliances

    Observe whether other high-power appliances (washing machine, dishwasher, electric oven) are showing performance issues or tripping breakers at the same time as E6. Concurrent issues suggest a supply voltage problem rather than a cooktop fault.

    Contact your energy provider if you suspect a neighbourhood-wide voltage issue — they can check the supply at your meter.

  2. 2

    Measure supply voltage (qualified persons only)

    If you are a licensed electrician or have one available, measure the voltage at the cooktop terminal block with all zones at full power. It should remain within 207–253 V. A significant drop under load indicates undersized supply wiring.

    The Asko cooktop requires a dedicated circuit — it should not share a breaker with other high-power appliances.

    Tools required
  3. 3

    Inspect the terminal block (power off)

    With power fully disconnected at the main breaker, remove the cooktop access panel and inspect the terminal block connections for loose screws, discolouration (brown or black terminal indicates arcing), or burnt insulation.

    Any sign of arcing at the terminals is an electrical hazard — the connection must be remade by a licensed electrician before the cooktop is used.

    Tools required

When to Call a Professional

Contact a qualified technician if:

  • E6 appears consistently on every startup regardless of time of day — indicates wiring or terminal fault rather than grid issue.
  • Visible arcing marks or discolouration at the cooktop terminal block.
  • Supply voltage measured at the cooktop drops below 200 V under cooking load.

Need Professional Help?

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