E09 error appears and the unit will not start; sometimes accompanied by a burning smell previously.

Safety: Immediately unplug the cleaner. Do not attempt to restart if you smelled burning or saw smoke.

• Visual inspection: Remove the housing to access the motor. Look for blackened windings, melted insulation, or burnt connectors.
• Check wiring harness: Inspect the motor wires from the control board to the motor for chafing or shorting to the chassis.
• Do not bypass protection: Never bypass fuses or safety devices to force the motor to run.
• Replace motor: If the motor shows signs of overheating or measures as a short with a multimeter, replace the complete motor assembly with a genuine Vorwerk part. The control board may also need replacement if its driver components are damaged.