The vacuum produces an unpleasant or musty odor during operation.

Safety first: Remove the battery before cleaning. Do not use harsh chemicals inside the air path.

Step-by-step checks:

• 1. Thoroughly clean dust bin: Empty the bin and wash it with mild soap and warm water if the manual allows. Dry completely before reinstalling.
• 2. Wash or replace filters: Clean washable filters per instructions and let them dry for at least 24 hours. Replace non-washable filters if they smell strongly.
• 3. Clean brush head: Remove hair and debris from the brush roll. Wipe the head housing with a slightly damp cloth and dry fully.
• 4. Store dry: Always store the vacuum in a dry area and avoid reinstalling damp components.

When to stop: Persistent odor after thorough cleaning may indicate deep contamination; replacing filters and, if necessary, the dust bin is recommended.