Hoval
Overheating Electrical Component or Insulation
Boiler emits strong burning or plastic smell during operation
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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
Fan motor overheating, Pump motor failure, Loose electrical connection causing arcing, Foreign object touching hot surfaces
How to Fix / Troubleshooting
Safety: Switch off the boiler immediately at the main isolator. Risk of fire or further damage.
- Visual inspection: After cooling, remove the front panel and look for discoloured wiring, melted insulation, or burnt PCB areas.
- Check fan and pump: Smell near the fan or pump may indicate motor failure. If either is excessively hot or seized, it must be replaced.
- Remove foreign objects: Ensure no plastic packaging or debris is left inside the casing near hot components.
- Do not restart the boiler until a qualified technician has identified and repaired the fault.
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Repair Difficulty
Hard
4/5
Required Part
Flue Fan or Circulation Pump Motor
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