Remeha
Mechanical noise from fan or pump
Boiler is very noisy, with whirring or grinding sounds
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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, Failing circulation pump, Air in pump, Loose mounting brackets or panels
How to Fix / Troubleshooting
Safety first: If the noise is severe or accompanied by burning smells, switch off the boiler immediately.
- Identify noise source: Listen carefully to determine if the noise comes from the top (fan area) or lower front (pump area) of the boiler.
- Bleed pump (if safe): With power off, carefully vent the pump to remove trapped air if a bleed screw is provided.
- Tighten panels: Check that the boiler casing and any nearby pipe clips are secure and not vibrating.
- Engineer tasks: Replace noisy fan or pump assemblies, check for cavitation due to incorrect pump speed, and ensure correct system design and flow.
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Repair Difficulty
Hard
4/5
Required Part
Flue Fan Assembly
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