MSPA Improper Spa Support or Unbalanced Installation

MSPA spa experiences excessive vibration or movement when bubbles or pump are running.

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Possible Causes

Uneven ground under spa, Soft or unstable surface, Air pockets under tub base, Internal pump mounting loose

How to Fix / Troubleshooting

Safety first: Do not sit on the spa walls while it is rocking or unstable.

  • Check surface: Ensure the spa is placed on a flat, level, and firm surface. Avoid grass with soft soil or sloped patios.
  • Use support mat: Install an MSPA ground mat or rigid foam boards under the spa to distribute weight evenly.
  • Reposition spa: Drain the spa and reposition it to a more stable area if necessary.
  • Inspect pump mounts: Open the motor unit and verify that the pump and blower are securely mounted with all rubber isolators in place. Tighten mounting screws if loose.
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Repair Difficulty

Very Easy 1/5

Required Part

MSPA Ground Mat
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