Bomann Water Pump Wear / Cavitation

Water pump is very noisy or makes a grinding sound during operation.

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.

Possible Causes

Low water level causing air intake, Debris in pump impeller, Worn pump bearings, Misaligned pump housing

Safety first: Unplug the unit and remove the water reservoir before accessing the pump area.

Steps:

Refill water: Ensure the reservoir is filled to the correct level to prevent the pump from sucking air.
Clean pump inlet: Remove any visible debris from the pump inlet or filter screen.
Bleed air: Tilt the unit gently to help trapped air escape from the pump.

If the pump remains very noisy, its internal bearings or impeller may be worn and the pump assembly should be replaced.

Medium 3/5

Water Circulation Pump

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