Chaffoteaux
Overheating Electrical Component
Boiler emits a burning or electrical smell, possibly with visible smoke or discoloration on the casing.
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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
Failing fan motor, Overheating pump, PCB component failure, Loose electrical connection causing arcing
How to Fix / Troubleshooting
Safety first: Immediately switch off the boiler at the mains and do not turn it back on. Risk of fire or electric shock.
User-level actions:
- Do not remove the boiler cover.
- Allow the boiler to cool and ventilate the area.
- Contact a qualified heating engineer for inspection.
Technical checks (qualified personnel):
- Inspect internal components for signs of overheating, burning, or melted insulation.
- Test fan, pump, and other motors for correct current draw and bearing condition.
- Check all electrical connections for tightness and signs of arcing.
- Replace any damaged components and, if necessary, the main PCB.
After repair, perform full safety checks including insulation resistance and earth continuity.
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Repair Difficulty
Professional Required
5/5
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