Safety: Turn off power before changing valve positions.

Verify valve settings: Ensure suction and return valves are set to draw from and return to the spa only when in spa mode.
Clean filter: High filter pressure reduces spa jet performance. Clean or backwash the filter.
Inspect spa suction: Check spa suction covers and lines for blockage.
Increase pump speed: On Sta‑Rite variable‑speed pumps, program a higher RPM for spa mode to provide adequate jet pressure.

Pump runs but spa jets are weak when in spa mode

Possible Causes