Bosch Accessory Spray Line Blockage

No solution spray from hand tool or upholstery attachment, but floor nozzle sprays normally

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Possible Causes

Clogged accessory spray nozzle, Blocked diverter valve, Kinked accessory hose, Debris in quick-connect coupling

How to Fix / Troubleshooting

Safety first: Unplug the unit and release trigger pressure before disconnecting hoses.

  • 1. Check accessory hose
    • Disconnect the accessory hose from the main body and tool.
    • Blow air through the hose or run water through it to confirm it is clear.
  • 2. Clean hand tool nozzle
    • Remove the spray nozzle from the upholstery tool if possible.
    • Soak in warm descaling solution if hard water deposits are present.
    • Clear holes gently with a soft brush.
  • 3. Inspect diverter valve
    • Locate the solution diverter valve that switches flow between floor nozzle and accessory hose.
    • Ensure the selector is fully engaged in the accessory position.
    • Check for debris or damage; replace the valve if it does not fully open.
  • 4. Check quick-connect coupling
    • Inspect the coupling O-rings and internal check valve for blockage.
    • Clean and lubricate O-rings with a silicone-safe lubricant if needed.
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Repair Difficulty

Easy 2/5

Required Part

Accessory Spray Nozzle
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