Protherm
Mechanical Noise from Fan, Pump, or Burner
Boiler is very noisy (whining, grinding, or rattling) 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, Failing circulation pump, Loose mounting brackets or panels, Combustion instability causing rumbling
How to Fix / Troubleshooting
Safety: Isolate power and gas before touching moving parts.
Steps:
- Identify the source of the noise (fan area, pump, casing). Use a mechanic’s stethoscope or similar if needed.
- Tighten any loose screws, brackets, or panels that may be vibrating.
- If the pump is noisy or grinding, replace it with a genuine Protherm pump.
- If the fan whines or rattles, replace the fan assembly.
- Rumbling or booming noises from the burner require combustion checks and possible burner or gas valve adjustment by a technician.
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Repair Difficulty
Hard
4/5
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