E05 error appears and the unit stops, often after extended use. The housing may feel warm.

Safety: Switch off and unplug the cleaner. Allow it to cool for at least 30 minutes.

• Clean filters: Remove and clean the pre-motor filter and any exhaust filter according to the Vorwerk manual (usually by tapping out dust or rinsing and fully drying). Never operate without filters.
• Check for blockages: Inspect the suction nozzle, hose, and recovery tank inlet for clogs. Remove any debris.
• Ventilation: Ensure the air vents on the housing are not blocked by rugs or furniture during use.
• Duty cycle: Use the cleaner in shorter sessions with cooling breaks if cleaning large areas.
• Persistent E05: If the error returns quickly even with clean filters and clear airflow, the motor’s thermal sensor or cooling fan may be faulty and the motor assembly should be replaced.