Unit powers on but motor does not run; display shows E2 shortly after startup.

Safety first: Disconnect the Kärcher carpet cleaner from power before opening any covers.

• Check for blockages: Remove the suction hose, floor nozzle, and wand. Inspect for clogs in the suction hose, intake port, and dirty water tank inlet. Clear any debris, hair, or carpet fibers.
• Inspect filters: Remove and clean the motor protection filter and any foam or mesh filters. A severely clogged filter can cause motor overload.
• Test motor spin: With the machine unplugged and housing opened, try rotating the turbine motor fan by hand. If seized or very stiff, the motor is likely defective and must be replaced.
• Check motor capacitor (if fitted): On some Kärcher carpet cleaners, an external start/run capacitor is wired to the motor. Inspect for bulging or leakage. Test with a capacitance meter and replace if out of spec.
• Inspect wiring: Check the motor wiring harness and connectors to the control PCB for burns or loose pins. Reseat or replace as needed.