Vacuum makes a high‑pitched whistling noise during use.

Safety first: Turn OFF and remove the battery before inspection.

• Check connections: Ensure the dust bin, wand, and nozzle are fully seated and locked.
• Inspect for cracks: Examine the bin, wand, and nozzle for visible cracks or holes.
• Check seals: Inspect rubber gaskets around the bin and filter housing. Replace any that are worn or missing.
• Isolate the noise: Run the vacuum with only the main body, then add the wand, then the nozzle to identify which part is leaking.