Vacuum leaves visible debris on the floor even after multiple passes.

Safety first: Turn off the vacuum and remove the battery before inspecting the floor head.

• Verify brush rotation: Turn the vacuum on briefly and observe the brush (keep hands clear). If it spins slowly or not at all, inspect for jams or motor issues.
• Use correct mode: Select the appropriate power level and floor type setting for carpets or hard floors.
• Clean floor head: Remove the brush roller and clear any blockages in the suction channel.
• Check brush type: Ensure you are using the correct Tineco brush (soft roller for hard floors, bristle roller for carpets) for your surface.