Termet
Mechanical Vibration / Fan or Pump Imbalance
Boiler vibrates excessively or resonates through the flue and pipework 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
Worn fan bearings in Termet fan assembly, Pump cavitation due to air in system, Loose mounting brackets or casing panels, Flue not properly supported causing resonance
How to Fix / Troubleshooting
Safety first: Do not touch moving parts while the boiler is running. Isolate power before tightening any fixings.
User checks:
- Bleed radiators to remove air that can cause pump noise.
- Check that the flue outside is firmly fixed and not rattling.
- Gently press on the boiler casing to see if vibration reduces, indicating loose panels.
Technician checks:
- Inspect the fan assembly for play in the bearings and replace if noisy or imbalanced.
- Check the circulation pump for cavitation and ensure correct system pressure.
- Tighten or add supports to the flue system and pipework.
- Secure all internal components and casing screws.
Persistent vibration can lead to premature component failure and should be corrected promptly.
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Repair Difficulty
Medium
3/5
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