If Roomba backs up or spins in circles, run Roomba in an open area with no obstacles present for 2 minutes to determine if the robot will stop with an error message. If it does, follow the troubleshooting steps for the appropriate error message.
If Roomba® does not produce an error message, check the following.
- Briskly tap both sides of the bumper several times to loosen debris.
- Briskly turn both wheels by hand, ensuring they spin freely and that each wheel exhibits the same amount of resistance.
- Wipe the cliff sensors with a clean, dry microfiber or soft cotton cloth.
- Remove the front caster wheel and clean the wheel, axle, and housing.
Note: Sometimes, Roomba® will not run on certain black or dark-colored surfaces. The cliff sensors that recognize an edge or a stair will view this color as an edge and will not clean over it. Because Roomba® believes that it is approaching an area that it cannot clean, it may back away from this area. Unfortunately, no adjustment can be made to correct this behavior. Please use a Virtual Wall® or Keep Out Zone in the iRobot® HOME App to block off the problem areas.
