Dirty water tank full indicator active even when tank is empty; suction stops

Safety first: Unplug the appliance before removing tanks or accessing sensors.

• 1. Empty and clean dirty water tank
  • Remove the dirty water tank and empty all contents.
  • Rinse thoroughly with warm water to remove foam, hair, and debris.
  • Locate the float mechanism inside the tank and ensure it moves freely.
• 2. Check float and magnet
  • Inspect the float for swelling, warping, or soap residue that may cause sticking.
  • Clean the float and float chamber; ensure the magnet (if used) is intact.
• 3. Inspect level sensor
  • On the main body, locate the level sensor area where the tank sits (reed switch or optical sensor).
  • Clean the sensor window and surrounding area with a soft cloth.
  • Check for broken or loose wires at the sensor connector.
• 4. Test reed switch (if applicable)
  • Use a multimeter in continuity mode across the reed switch terminals.
  • Move the float (with magnet) near the switch; continuity should change as the magnet approaches/leaves.
  • If there is no change, replace the level sensor assembly.
• 5. Refit and test
  • Reinstall the clean float and tank, ensuring it seats correctly.
  • Power on and verify that the full indicator is off when the tank is empty.