LED display shows E09 and vacuum shuts down when switching to high power mode

Safety first: Power off and remove the battery before inspection.

• 1. Clean all airflow components: Remove and clean the dust cup, pre‑filter, and exhaust filter. Check the wand and nozzle for partial blockages that may not affect low power but overload the motor on turbo.
• 2. Test without nozzle: Attach the battery and run the vacuum in high power with only the main body (no wand or floor head). If E09 does not appear, the issue is likely in the nozzle or wand.
• 3. Test with fully charged battery: Charge the battery to 100% and retest. Weak or aged batteries can sag under high load and trigger overcurrent protection.
• 4. Inspect motor sound: Listen for grinding or high‑pitched squealing, which indicates worn motor bearings. This increases current draw and can cause E09.
• 5. If E09 persists with clean airflow and good battery: The motor or current sensing circuit on the control PCB is likely faulty. Professional diagnosis and replacement of the motor or PCB is required.