Zline Pump Bearing Wear / Motor Noise

Dishwasher makes a high-pitched squealing or whining noise 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

Worn circulation pump bearings, Cavitation due to low water level, Foreign object partially contacting impeller, Misaligned pump mounting

Safety first: Disconnect power before accessing the base.

Verify water level: Open the door mid-cycle to ensure the water level is adequate. If low, address fill issues first.
Inspect for debris: Clean filters and sump, and check the circulation pump inlet for obstructions.
Check pump mounting: Ensure the circulation pump is securely mounted and not vibrating against the chassis.
Replace pump: Persistent squealing usually indicates failing bearings; replace the circulation pump assembly.

Hard 4/5

Circulation Pump Assembly

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