Jets are weak or have very little pressure even when pumps are on high speed.

Safety: Turn off power before removing filters or opening pump unions.

• Clean or remove filter: Take out the filter and rinse thoroughly. Test jet strength with the filter removed; if flow improves, replace the filter.
• Check valves and diverters: Ensure all slice valves are fully open and that diverter valves on the spa shell are set to direct flow to the desired seats.
• Bleed air from pump: Loosen the union on the pump discharge slightly to release trapped air until water seeps out, then retighten.
• Inspect jets: Remove individual jet inserts and check for debris or scale buildup. Clean and reinstall.
• Impeller inspection (advanced): If flow remains weak, a technician may need to open the pump wet end to inspect and clean the impeller.