Vacuum displays “Err 12”; suction is reduced and the unit may pulse or surge.

Safety first: Turn OFF the vacuum and remove the battery before cleaning internal areas.

• Clean dust bin and cyclone: Empty the bin and thoroughly clean the cyclone assembly. Packed dust can affect airflow readings.
• Inspect sensor ports: Look for small holes or channels near the bin outlet or motor housing that may be the pressure sensor port. Gently brush away dust with a soft, dry brush.
• Check filters: Ensure pre‑motor and HEPA filters are clean and properly seated. Misaligned filters can alter airflow and confuse the sensor.
• Reset and test: Reassemble, then perform a reset (hold Power/Clean 10–20 seconds). Run the vacuum on low power and see if Err 12 returns.
• Service sensor/board: If the error persists with clean airflow paths, the pressure sensor or its circuit on the main PCB may be defective and require board replacement.