Severin Pump Cavitation / Partial Blockage

Unusual humming or buzzing noise from the pump, with reduced or no water flow.

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

Air in pump, Scale restricting inlet, Debris in pump chamber, Worn pump valves

Safety first: Unplug before handling the water tank.

Bleed air: Fill the water tank to MAX and run a hot water or rinse cycle (if available) several times to purge air.
Descale: Run a descaling cycle to clear restrictions.
Check tank outlet: Clean the tank valve and filter mesh.
If noise persists with poor flow: The pump may be worn and require replacement.

Medium 3/5

ULKA Vibration Pump

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