NetSpa
Pump Impeller or Bearing Wear
NetSpa pump makes a loud grinding or rattling noise during operation, with normal or slightly reduced flow.
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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
Debris in pump impeller, Worn pump bearings, Cavitation from air in water line, Misaligned pump mounting
How to Fix / Troubleshooting
Safety first: Unplug the spa before inspecting the pump or hoses.
- Bleed air: Remove air from the system by loosening the filter housing cap slightly until water appears, then retighten.
- Check for debris: Remove the filter and inspect the suction area for stones or hard debris that could reach the pump.
- Secure motor unit: Ensure the NetSpa motor unit is on a stable, level surface to reduce vibration.
Persistent grinding or rattling usually indicates internal pump damage. The NetSpa circulation/massage pump assembly should be replaced to prevent complete failure.
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Repair Difficulty
Hard
4/5
Required Part
NetSpa circulation/massage pump assembly
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