Display shows ADD or water droplet icon; beeping; unit will not start ice cycle.

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

Steps:

• Fill the tank: Remove the water tank and fill with clean, potable water up to the MAX line. Avoid using sparkling or flavored water.
• Reseat the tank: Reinstall the tank firmly so that any valve or magnet aligns with the internal level sensor. Push until it clicks or sits flush.
• Check for airlocks: Some Caso models can trap air at the tank outlet. Gently tap the tank and the inlet area to release trapped air.
• Inspect the inlet: Look for debris or scale at the tank outlet and the machine's inlet port. Clean with a soft brush and rinse.
• Test operation: Plug the unit back in and start a cycle. If ADD persists despite a full tank, inspect the water level sensor / float switch and wiring as described in the E8 procedure.