Siemens Uneven Brush Contact / Nozzle Contamination

Carpet cleaner leaves streaks or lines on carpet after cleaning

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Possible Causes

Dirty or worn brushes, Clogged spray jets causing uneven wetting, Warped nozzle squeegee, Uneven wheel height

How to Fix / Troubleshooting

Safety: Unplug before cleaning the brush head.

  • Clean brushes: Remove the brush roll and wash off lint, hair, and residue. Replace if bristles are badly worn or deformed.
  • Clean spray jets: Remove and clean the spray bar to ensure even spray across the width.
  • Inspect squeegee: Replace warped or damaged squeegee strips that can leave water lines.
  • Check wheels: Ensure wheels rotate freely and are not worn unevenly, which can tilt the nozzle.

Perform a test pass on a small area to confirm streaks are eliminated.

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Repair Difficulty

Very Easy 1/5

Required Part

Brush Roll Assembly
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