Diagnosis
The dock's auto-empty function for the *mop* water isn't working, or the robot is incorrectly reporting a full tank. The system is designed to pump dirty water back after cleaning, but a sensor or pump issue can cause premature 'full' readings.
How to Fix It
Manually check and reset the system. Empty the dirty water tank. In the app, go to Dock Settings and run the "Dock Self-Clean" function. This cycles the internal pumps and can clear airlocks or minor clogs in the water lines.
If That Didn't Work
Inspect the rubber seals and connectors. Where the clean and dirty water tanks connect to the dock, look for kinked tubes or debris on the rubber gaskets. A bad seal can cause the water system to malfunction.
Heads Up
This is often a software glitch. Ensure your app and dock firmware are fully updated. A recent update specifically addressed water tank reporting accuracy.