Display shows E9; unit runs but suction is disabled and a tank icon may flash.

Safety: Unplug the unit before removing tanks.

• Empty recovery tank: Remove and fully empty the dirty water tank. Rinse it with warm water to remove foam and debris.
• Clean float and cage: Locate the float inside the recovery tank or tank lid. Ensure it moves freely up and down. Clean any hair or residue from the float cage.
• Check tank seating: Reinstall the tank, ensuring it sits flat and fully engages the body seals and sensor area.
• Inspect sensor: If accessible, check the float sensor (reed switch or micro-switch) on the body for damage or misalignment.

If E9 remains even with an empty, clean, and correctly seated tank, the float sensor may be defective and should be replaced.