No water spray from the nozzle; pump icon or water indicator flashes on display

Safety first: Unplug the Bosch carpet cleaner before removing hoses or opening the pump compartment.

• 1. Check water tank
  • Remove the clean water/solution tank and verify it is filled to the correct level.
  • Ensure the tank cap and valve seal are correctly fitted and not damaged.
  • Reinstall the tank firmly until it clicks into place.
• 2. Prime the pump
  • With the tank full, plug in the unit and switch it on.
  • Hold the trigger for 30–60 seconds to allow the pump to draw water and clear air from the line.
  • If water begins to spray, the issue was an airlock.
• 3. Clean spray nozzles
  • Unplug the unit again.
  • Remove the spray bar or nozzle assembly from the cleaning head.
  • Soak in warm water and gently clear mineral deposits with a soft brush or toothpick (do not enlarge the nozzle holes).
• 4. Inspect solution hoses
  • Check the transparent solution hose from the tank to the pump and from the pump to the nozzle.
  • Look for kinks, pinched sections, or leaks; replace damaged hoses.
• 5. Test solution pump
  • Access the Bosch solution pump (usually a small diaphragm or rotary pump near the tank connection).
  • With the pump disconnected, measure coil resistance; an open circuit indicates a failed pump.
  • If the pump receives voltage but does not run or is very noisy, replace the pump assembly.