Nibe Overheating electrical component or dust burn‑off

Unpleasant smell (burning or plastic) from Nibe furnace cabinet

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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

Dust on electric heater, loose electrical connection overheating, failing motor or transformer, foreign object touching heater

How to Fix / Troubleshooting

Safety: If you smell burning plastic or see smoke, immediately turn off power at the main switch and do not use the unit until inspected.

  • Initial burn‑off: A mild smell may be normal after first startup or long inactivity as dust burns off the heater. This should dissipate within a few hours.
  • Inspect visually: With power off, remove the front panel and look for discolored wiring, melted insulation, or burnt components.
  • Clean dust: Vacuum dust from around the electric heater and electronics (avoid touching components).

Any persistent or strong burning smell requires immediate attention from a qualified technician.

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Repair Difficulty

Hard 4/5
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