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alfred43Sep 5, 2025
What to do if my Kärcher Pressure Washer shows ERROR 11 Flame sensor (no flame)?
- GGerald RobinsonSep 5, 2025
If your Kärcher Pressure Washer shows ERROR 11, indicating a flame sensor issue, start by cleaning the nozzle holder. Next, inspect the ignition electrodes for improper setup or dirt and adjust or clean them accordingly. If the problem persists, the photo cell of the flame monitoring might be defective and require replacement. Other potential causes include a defective fuel pump (replace it), a defective solenoid valve (replace it), a choked fuel filter (replace it), or a faulty ignition transformer (replace it).