Vacuum smells like burning plastic or hot dust during use

Safety first: Turn off the vacuum immediately, remove the battery, and allow the unit to cool completely before further inspection.

• Inspect brush roll: Remove the brush roll and check for jams or melted plastic around the ends. Replace the brush roll if there is visible damage.
• Clear blockages: Check the wand, floor head, and filters for blockages and clean thoroughly.
• Smell source: With attachments removed, briefly run the motor (battery installed) and smell near the exhaust. If the burning smell comes directly from the motor, stop using the vacuum.
• Replace failing components: A persistent burning smell indicates motor or brush drive damage. Replace the motor assembly or floor head as appropriate.