Electrical fault warning, unit trips household breaker or RCD when turned on

Critical safety warning: If the appliance trips a breaker or RCD, do not repeatedly reset and retry. There may be a dangerous electrical fault.

• Unplug immediately: Disconnect the Siemens carpet cleaner from the mains and do not use it until inspected.
• Check for visible water leaks: Inspect the housing for signs of internal water leakage, especially around the motor compartment. If you see water inside electrical areas, the unit must be fully dried and inspected by a professional.
• Inspect the power cord: Look for cuts, crushed sections, or exposed copper. If any damage is found, replace the entire cord set.
• Smell for burning: A burnt smell from the motor or pump area suggests a shorted component. Do not attempt to run the unit again.

Because this fault involves potential electric shock and fire risk, further diagnosis (insulation resistance testing, component replacement) should be performed only by a qualified Siemens service technician.