MSPA
Circulation Pump Mechanical Wear
MSPA spa makes loud grinding or rattling noises during filtration or heating cycles.
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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 pump bearings, Debris in pump impeller, Cavitation due to low water level, Misaligned pump mounting in MSPA motor unit
How to Fix / Troubleshooting
Safety first: Unplug the spa before opening the motor unit.
- Check water level: Ensure the spa is filled to the correct level to prevent cavitation noise.
- Clean filter and suction: Remove debris that could be drawn into the pump.
- Inspect pump: Open the motor unit and access the circulation pump. Remove the pump cover (if possible) and check for stones, leaves, or plastic pieces in the impeller. Remove any obstructions.
- Assess bearings: Spin the pump shaft by hand. Roughness or play indicates worn bearings. Replace the MSPA circulation pump assembly if noise persists.
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Repair Difficulty
Medium
3/5
Required Part
MSPA Circulation Pump Assembly
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