Artisan Spas
Hydraulic Hammer or Loose Internal Components
Spa makes loud banging or knocking noises when pump is running.
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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
Air in plumbing causing surging, Loose pump mounting bolts, Debris in pump impeller, Loose plumbing lines hitting cabinet
How to Fix / Troubleshooting
Safety first: Turn off power before tightening mounts or inspecting inside the cabinet.
- Bleed air: Bleed the pump unions to remove air pockets.
- Secure pump: Check that the pump is firmly bolted to its base and that rubber mounts are intact.
- Secure plumbing: Use clamps or foam blocks to prevent PVC lines from striking the cabinet when the pump starts and stops.
If noise persists, the pump bearings or impeller may be damaged and the pump should be serviced.
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Repair Difficulty
Medium
3/5
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