E3
Kuppersbusch Induction Coil Overtemperature Protection

Induction cooktop zone shuts off with E3 after operating at high power for some time.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Prolonged operation at maximum power, inadequate ventilation under cooktop, defective temperature sensor on coil, partially blocked cooling fan

How to Fix / Troubleshooting

Safety first: Allow the cooktop to cool and disconnect power before removing it from the countertop.

  • Ventilation and installation: Confirm that the cooktop has the required clearance from oven or drawers below and that air can circulate freely.
  • Clean cooling system: Access the underside and clean dust from the fan and heat sinks on the power modules.
  • Check fan performance: With power restored, run multiple zones at medium power and verify that the fan starts and maintains airflow.
  • Sensor and coil inspection: With power off, inspect the temperature sensor attached to the induction coil (often a small NTC clipped to the coil). Ensure it is firmly attached and wiring is intact.
  • Replace components: If the sensor is loose or damaged, replace the coil temperature sensor. If overheating persists, the induction power module may be defective and require replacement.

Usage tip: Avoid covering ventilation slots with cookware or cloths and do not operate all zones at maximum power for extended periods in poorly ventilated installations.

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Repair Difficulty

Hard 4/5

Required Part

Induction Coil Temperature Sensor
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