Cordless vacuum produces a high-pitched whistling noise during use

Safety first: Turn OFF the vacuum before inspecting seals and joints.

• Step 1 – Check bin installation: Remove and reinstall the dust container, ensuring it clicks firmly and sits flush.
• Step 2 – Inspect seals: Examine rubber gaskets around the bin, cyclone, and filters for tears or deformation. Replace any damaged seals.
• Step 3 – Check for cracks: Look for hairline cracks in the dust bin and cyclone housing. Replace the bin assembly if cracked.
• Step 4 – Inspect tube connection: Ensure the extension tube and nozzle are fully inserted and locked. A loose joint can cause whistling and loss of suction.