P2 appears and the unit stops; water tank is full.

Safety: Turn off and unplug the unit before removing the tank to avoid spills and electrical hazards.

Steps:

• Empty tank: Carefully remove the water tank, empty it completely, and rinse if there is any dirt or biofilm.
• Check float: Inspect the float inside the tank (if present). Ensure it moves freely and is not waterlogged or broken.
• Reinstall correctly: Slide the tank back into place firmly until it is fully seated. Many Argo models will continue to show P2 if the tank is not pushed in all the way.
• Switch check: If P2 remains with an empty, correctly installed tank, inspect the tank full switch in the tank compartment. Test it with a multimeter and replace the Argo tank full micro-switch if it does not change state when actuated.
• Test operation: Restore power and verify that P2 clears and the unit resumes operation.