Softener does not regenerate automatically; water gradually becomes hard, but manual regeneration works.

Safety: Programming changes can be made with power on; no plumbing work is required for initial checks.

• Verify programming: Check time-of-day, hardness setting, and regeneration time. Ensure the regeneration mode is set to demand or time clock as desired, not OFF.
• Check flow meter: Run water at a faucet and confirm the display shows flow and remaining capacity decreasing. If not, troubleshoot the Pentair turbine flow meter.
• Force a regen: Start a manual regeneration and confirm the valve cycles correctly. If manual works but automatic does not, suspect a programming or board logic issue.
• Factory reset: Perform a factory reset and re-enter settings. If the unit still never initiates regeneration, replace the Pentair electronic control board.