Pentair Sta-Rite Air‑Bound System / No Discharge Flow

Pump runs but pressure gauge on filter reads zero and there is no circulation

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Possible Causes

Pump not fully primed, Air lock in filter or heater, Multiport valve in wrong position

How to Fix / Troubleshooting

Safety: Turn off power before changing valve positions. Open air relief slowly to avoid injury.

  • Prime pump: Fill the Sta‑Rite pump strainer housing with water and ensure the lid o‑ring is sealing properly.
  • Bleed air from filter: With the pump running, open the air relief valve on top of the filter until a steady stream of water comes out, then close it.
  • Check valve positions: Verify that the multiport valve (if present) is set to Filter and that any bypass valves around the filter or heater are correctly positioned.
  • Inspect for internal filter issues: A broken standpipe or missing internal parts can cause no pressure. If suspected, open the filter and inspect internals.
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Repair Difficulty

Easy 2/5
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