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Ursprünglicher Beitrag von: Matt Davis ,


The sensors that keep the Roomba from falling off an edge are called cliff sensors.  If they sense open space below the Roomba, it will stop the robot.  The issue with these is that they are sometimes triggered incorrectly.  In the instance of your kitchen tiles, they are dark colored and look like an edge.

The Roomba is designed to be able to determine the difference between a dark surface and an actual drop, but dirty or covered sensors can inhibit this ability.  One thing to try is to clean the sensors with a cloth.  They are the clear bars directly underneath the   bumper.  If that doesn't work you may have to replace the sensors all together.