Question about iRobot Roomba 4210 Bagless Robotic Vacuum

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IRobot Roomba Discovery not moving across room.

Roomba starts by going in increasing circles then moves in a straight line until it hits the first obstacle. It doesn't "bump and go" as it should, but continues in circles lifting up and down, until turned off. I have cleaned the filter, brushes and wheel areas several times but no improvement. PLEASE HELP ME!!! Thank you Gail

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  • VACUM Dec 05, 2007


  • Anonymous Mar 22, 2014

    irobot 500 starts and goes around in small circles. won't go straight.



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I had the same kind of problem with my model 400 today...after starting it and having it go in a circle for 30 seconds or so it would finally run into something and then back up a few inches, turn, then go forward a few inches, then back up a few inches, turn, then go forward a few inches, etc., etc.. I tried cleaning off the four pairs of sensors under the bumper and blowing out various things underneath (by mouth since I didn't have any canned compressed air). It didn't really help. It then occurred to me that I had a leaf blower! I put the Roomba upside down on the grass, put the leaf blower on high, and blew at it from all directions and up close. More dust came out than I thought would. It has been running normally now for the last 45 minutes.

Posted on Sep 14, 2008


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Posted on Jan 02, 2017


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