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Brandon RyanAug 19, 2025
Why is my Pentair FLECK 5810 SXT Water Filtration Systems softener not using salt?
- AAlisha FlowersSep 12, 2025
If your Pentair Water Filtration System softener isn't using salt, begin by cleaning the drain line and/or flow control to remove any blockages. Check and clean or replace the injector and screen if they are plugged. Ensure there's water in the brine tank and check for any restrictions in the BLFC, making sure the safety float isn't stuck. Verify that the line pressure is at least 1.4 bar. Inspect the brine line for air leaks. If the issue persists, it may be due to an internal valve leak, in which case you should call a dealer to check the piston, seals, and spacers for scratches and dents.














