Display shows CF after extended use; unit may still operate but requests filter maintenance.

Note: CF is typically a maintenance reminder, not a fault.

• 1. Turn off and unplug: For safety, power down before removing filters.
• 2. Remove and clean filters: Take out the front and/or rear filters. Wash with lukewarm water and mild detergent. Rinse thoroughly and allow to dry completely before reinstalling.
• 3. Clean grilles and coils: Vacuum the intake and outlet grilles. If accessible, gently brush dust from the evaporator fins.
• 4. Reset reminder: Follow the user manual to reset the CF indicator (often by holding the FILTER or TIMER button for several seconds).