Kuppersbusch Grease/Residue Ignition or Electrical Overheating

Strong burning smell or smoke from oven during normal use (not first-time burn-in).

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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

Heavy grease buildup on cavity surfaces, food spillage on elements, failing wiring insulation, overheating fan motor or control board

How to Fix / Troubleshooting

Safety first: Turn off the oven immediately. If flames are visible, keep the door closed and switch off power. Have a fire extinguisher rated for kitchen use available.

  • Ventilate: Open windows and use an extractor hood to clear smoke.
  • Inspect cavity: Once cool, inspect for heavy grease deposits or burnt-on food near elements. Clean thoroughly with appropriate oven cleaner.
  • Check wiring: Remove rear and top panels to inspect wiring harnesses for melted insulation or burn marks. Repair or replace damaged wiring harness sections.
  • Motor and board: Smell near the fan motor and control board for signs of electrical burning. Replace any component that shows heat damage.

Warning: Do not continue using the oven if electrical burning smells persist; risk of fire.

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Repair Difficulty

Hard 4/5

Required Part

Oven Wiring Harness
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