Robot vacuum leaves visible dust lines and poor pickup performance on hard floors.

Safety first: Turn OFF the robot and remove the dust bin.

• Empty bin: Completely empty the dust bin and remove any compacted debris.
• Clean or replace filters: Remove the primary and HEPA filters. Tap gently to remove dust. Replace filters if they are more than a few months old or visibly damaged.
• Inspect suction path: Check the opening behind the main brush and the duct into the dust bin for clogs. Clear with a brush or vacuum.
• Check suction level: In the Ultenic app, ensure suction power is set to Normal or Max, not Quiet.
• Test cleaning: Run the robot on a small area and verify improved pickup.