Hoonved
Pump Bearing Wear / Cavitation
High-pitched squealing or whining noise during wash or drain phases.
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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 bearings in wash pump, Worn bearings in drain pump, Air in hydraulic circuit causing cavitation, Restricted water inlet causing low flow
How to Fix / Troubleshooting
Safety first: Disconnect power before touching pumps or internal components.
- Identify source: Listen carefully to determine whether the noise occurs during wash (wash pump) or drain (drain pump).
- Check for air and restrictions: Ensure the machine fills properly and that inlet filters are clean. Low water flow can cause cavitation noise.
- Inspect pumps: Access the noisy pump and check for play in the motor shaft. Excessive play or rough rotation indicates bearing wear.
- Replace pump: Bearing replacement is usually not economical on sealed pump units; replace the complete pump assembly.
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Repair Difficulty
Hard
4/5
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