Vacuum makes a high-pitched whistling noise during use.

Safety first: Turn OFF the vacuum and remove the battery before inspecting for leaks.

• Check bin and cyclone fit: Remove and reinstall the dust bin and cyclone, ensuring they lock firmly into place.
• Inspect gaskets: Look for torn or flattened rubber seals around the bin, cyclone, and filter covers. Replace if damaged.
• Examine wand and joints: Check for cracks or gaps in the wand and at each connection point. Replace any cracked parts.
• Listen for leak location: With the vacuum running, carefully move your ear (or a small piece of tissue) around joints and seals to locate the whistling source. Do not place hair or loose clothing near the brush head.
• Secure all covers: Ensure the HEPA filter cover and any access panels are fully latched.