Vacuum shuts down after a few seconds of use; body or handle feels hot; E3 or three flashing LEDs indicate overheating.

Safety first: Switch OFF, remove the battery, and allow the vacuum to cool for at least 30 minutes before further inspection.

• Let it cool fully: Place the vacuum in a cool, dry area away from direct sunlight until the housing is no longer warm.
• Clean all filters: Remove the dust bin, pre‑motor filter, and HEPA/post‑motor filter (usually at the rear or top of the unit). Tap off dust outdoors. If the manual permits, rinse filters with lukewarm water only and allow to dry completely (24 hours) before refitting.
• Check vents and grilles: Inspect all air vents around the motor housing and exhaust. Use a soft brush or vacuum to remove lint and dust.
• Inspect for blockages: Check the wand, hose (if fitted), and nozzle for obstructions that could restrict airflow and cause overheating.
• Short test runs: After reassembly and cooling, run the vacuum for 1–2 minutes on low power. If it runs without shutting off, gradually increase usage time.

If E3 reappears quickly with clean filters and clear airflow, the thermal sensor or motor windings may be faulty. Continued use could damage the motor; seek professional service for motor assembly or sensor replacement.