Thanks for reply. Ir came to a point where it's Impossible to use the robot. Every attempt to operate, the dustbin message would soud and stopped the cleaning. Performed all testing, restarts and factory default settings and nothing worked. Opened the unit and carefully cleanned the inside, aspecially printed circuit board and dustbin sensor board. Ir was full of dust Over the boards. Re-assembled the unit and it os right now performing the second room cleaning and has not showned any fault. I believe it must have collected some conductive ir magnetic particules while cleaning wich got onto the boards and got the circuitry confused. Thanks for the help.