Vacuum shows E8 or beeps and stops when filter is dirty, often after long use without cleaning

Safety first: Turn off and remove the battery before removing filters.

• Remove and clean pre-filter: Take out the pre-filter (foam or mesh). Tap it gently to remove dust. If washable, rinse with lukewarm water and let it dry completely for at least 24 hours.
• Clean HEPA filter: Remove the HEPA cartridge. Tap off loose dust. If the manual allows, rinse under running water from the clean side out. Do not use detergents. Dry thoroughly before reinstalling.
• Clean sensor area: Some Xiaomi models have a dust/airflow sensor near the cyclone or exhaust. Use a soft brush or compressed air to gently clean any visible sensor openings.
• Reset filter indicator: If your model has a filter reset function (button or app), perform the reset after cleaning.
• If E8 persists with clean filters: The airflow sensor or main PCB may be faulty. Continued use is possible if suction is normal, but for proper operation the sensor board or main PCB should be replaced.