Ferroli Overheating Component / Electrical Overheat

Boiler emits a burning smell or plastic smell during operation, with or without visible smoke, but no error code.

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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 burning off heat exchanger (new or after long inactivity), Overheating pump or fan motor, Loose electrical connection causing arcing, Foreign object near burner

How to Fix / Troubleshooting

Safety first: If you smell burning plastic or see smoke, immediately turn off power and gas to the boiler. Do not continue to use it.

  • Ventilate the area: Open windows and doors to disperse any fumes.
  • New boiler note: A slight smell on first use can be normal as oils burn off, but it should dissipate quickly and not be accompanied by smoke or repeated strong odour.
  • Engineer checks:
    • Inspect internal wiring and components for signs of overheating or melting.
    • Check pump and fan motors for overheating and replace if necessary.
    • Ensure no plastic or packaging remains near the burner or flue.
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Repair Difficulty

Hard 4/5

Required Part

Fan Assembly
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