Passion Spas Hydraulic Shock / Loose Plumbing

Spa makes loud banging or knocking noises when pumps start or stop.

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

Water hammer in plumbing, Loose pipe supports, Air pockets in lines, Worn pump mounts

Safety first: Turn off power at the GFCI breaker before inspecting plumbing.

Bleed air: Loosen pump unions slightly to release trapped air, then retighten.
Secure plumbing: Inspect PVC lines for movement when pumps start. Add or tighten pipe clamps and supports to reduce flex.
Check pump mounts: Ensure pumps are firmly bolted to their bases and that rubber isolation mounts are intact.

Persistent banging may indicate a more serious plumbing issue and should be evaluated by a technician.

Medium 3/5

Pump Mount Kit

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