E17 displayed and unit reports low inlet pressure or fails to regenerate properly

Safety first: Turn off water and relieve pressure before removing screens or filters.

• Check household pressure: Open a cold faucet and observe flow. If weak throughout the house, investigate well pump, municipal supply, or main shutoff valves.
• Inspect inlet screen: Remove the Watersoft valve inlet fitting and clean any debris from the inlet screen or filter basket. Rinse thoroughly and reinstall.
• Check pre-filters: Replace any clogged sediment or carbon filters installed ahead of the softener.
• Verify valves: Ensure the main inlet valve and any isolation valves are fully open and not partially closed.

After restoring normal pressure, clear E17 and run a manual regeneration to confirm proper operation.