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

Clean or remove filter: Take out the filter cartridge and rinse thoroughly. Test jet flow briefly with the filter removed.
Open valves: Ensure all diverter and slice valves are fully open and positioned to send water to the desired jet zones.
Bleed air: Loosen the pump union slightly until water flows steadily, then retighten.
Check jets: Remove individual jet inserts (if removable) and clean out debris or calcium buildup.

Jets are weak or no water comes out of jets even though pump is running.

Possible Causes