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

Safety: Turn off power before removing the filter to avoid suction hazards.

• Clean filter: Remove the filter cartridge and rinse thoroughly with a garden hose, spraying between pleats. For heavily soiled filters, soak in a spa filter cleaner solution per product instructions.
• Inspect for damage: Check the filter end caps and pleats for cracks or tears. Replace if damaged.
• Reset reminder: Follow the Hydropool manual to reset the filter timer via the topside control.