Zanussi Circulation Pump Bearing Wear / Cavitation

Dishwasher emits a high‑pitched whining noise during wash.

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

Worn circulation pump bearings, Air in circulation system, Restricted water flow due to clogged filters

Safety first: Disconnect power before accessing the base.

Clean filters: Ensure all filters and the sump are clean to maximize water flow.
Bleed air: Run a full cycle with the dishwasher properly filled to purge air from the system.
Assess pump: If the whining persists and is localized to the pump, plan to replace the circulation pump assembly.

Hard 4/5

Circulation Pump

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