Gaggenau Stuck Hot Surface Indicator Switch or Sensor

Electric cooktop hot surface indicator stays on even when all zones are cool

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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

Failed hot surface sensor on element, Shorted indicator circuit, Faulty control board input

How to Fix / Troubleshooting

Safety: Ensure all zones are off and cool to the touch before inspection. Disconnect power before internal work.

  • Verify temperature: Confirm that all cooking zones are truly cool. Some indicators remain on until the glass is fully cooled.
  • Power reset: Turn off the breaker for 5 minutes and restore power. If the indicator remains on, proceed.
  • Identify affected zone: Determine which zone's use triggers the indicator and inspect that heating element's sensor.
  • Test sensor (technician): Access the element and test the hot surface sensor or switch for proper operation according to Gaggenau specs.
  • Replace faulty part: Replace the heating element with integrated sensor or the separate sensor harness if defective.
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Repair Difficulty

Medium 3/5

Required Part

Radiant Element with Hot Surface Sensor
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