Vacuum leaves lines of debris behind and does not pick up well from carpets.

Safety first: Remove the battery and detach the nozzle.

• Inspect brush bristles: Check if the bristles are worn down, uneven, or matted with hair. Replace the brush bar or nozzle if bristles are significantly worn.
• Clean nozzle air path: Remove the bottom plate (if applicable) and clear any compacted dust or fibers from the air channels.
• Check brush speed: Reinstall the nozzle, insert the battery, and briefly run the vacuum while observing the brush (keep hands and clothing away). If it turns slowly or stops under light load, the motor or belt may be worn.
• Use correct mode: Ensure the vacuum is set to high or turbo mode for carpets, as low mode may not provide enough agitation.