iRobot Roomba 4210 Bagless Robotic Vacuum "going circles think wheel" Questions

goes in backwards circles. Pretty much a bad component in your Roomba, makes it think that it is constantly in collision mode. This makes it go backwards in circles. I fixed mine using this repair kit

...going in circle and quits My iRobot Roomba bagless vaccuum goes clockwise, then counter clockwise, backs up and repeats the process until it beeps and turns itself off. I think this is an original ...

...think it is going over a cliff so it backs up. I didn't have a can of compressed air, so I turned it over on the grass and went after it with a leaf blower..up close. Lots of dust came out and it has ...