Jets are weak or have very little pressure even though the pump is running.

Safety: Keep hands and hair away from suction fittings while testing.

• Clean or remove filter: Take out the filter cartridge and test jet strength. If flow improves, replace or deep-clean the filter.
• Check air controls: Open the air control knobs fully to allow air mixing, which can improve perceived jet strength.
• Adjust diverter valves: Turn Jacuzzi diverter valves to direct more flow to the desired seat or zone.
• Bleed air: If the spa was recently refilled, bleed air from pump unions until water flows steadily.

If jets remain weak, the pump impeller may be worn or partially blocked and should be inspected.