Strong burning smell from machine during use, sometimes accompanied by smoke.

Safety first: Switch off and unplug immediately. Do not continue to run the machine if smoke or strong burning smell is present.

• Check filters and airflow: Clean or replace any motor protection or exhaust filters. Ensure vents are not blocked.
• Inspect motor brushes: Access the vacuum motor and check the brushes for excessive wear or crumbling. Replace if necessary.
• Look for debris: Check the motor fan area for pieces of plastic, screws, or other debris rubbing on the fan.
• Assess motor condition: If the smell persists or there are visible burn marks, the motor windings may be damaged. Replace the motor.