Nibe
Overheating or Combustion Issue
Boiler or flue emits unusual smells (burning, chemical, or flue gas odour)
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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, Flue gas recirculation due to flue fault, Overheating electrical component, Small water leak onto hot parts
How to Fix / Troubleshooting
Safety first: If you smell gas or strong flue fumes, turn off the boiler, shut off the gas supply, ventilate the area, and leave the property. Call emergency gas services immediately.
- Initial use smell: A slight burning smell on first use after a long period can be normal as dust burns off. This should disappear quickly.
- Check for visible smoke: If you see smoke or charring, switch off power and do not use the boiler.
- Inspect around boiler: Look for items stored too close to the boiler or flue that may be overheating.
- Professional inspection: A Nibe technician must check combustion, flue integrity, and internal wiring for overheating or leaks.
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Repair Difficulty
Professional Required
5/5
Required Part
Nibe Flue System
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