Display shows CF or CLn, reminder to clean or change filter; spa otherwise operates normally.

Note: CF/CLn is a maintenance reminder, not a failure.

• Clean filter: Remove the filter cartridge and rinse thoroughly. For deep cleaning, soak in a spa filter cleaner solution, then rinse.
• Replace if needed: If the filter media is discolored, brittle, or the end caps are cracked, replace with a Saratoga-compatible filter.
• Reset reminder: Follow your user manual to reset the filter timer (often by holding a specific button combination for several seconds).