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Saturday

Irobot roomba goes backwards a little and then just circles?

There are many other roomba users too getting this same problem, some gets easily solved and some needs major troubleshooting.But in most of the cases it gets solved.------------

Read the solutions which other roomba users mentioned, that this helped them:-----

NUMBER 1:---
I turned my shop vac onto "blow" and blasted my roomba with this problem. It worked!!! I had already cleaned it thoroughly, but it needed to be blown out. My only regret is that I did it in my shop, rather than outside. It was pretty dusty.

Thanks again for the tip. Saved me $100+
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NUMBER 2:---
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.

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NUMBER 3:--
I have takin several Roombas apart with this problem. Basically the sensors on the bumber are blocked so the roomba thinks it is hitting something. I believe this is a design problem because it is so common. If you could see how the bumbers work, there is an infrared sending unit and an infrared receiving unit (they look like little LED's. when the bumper is pressed, a plastic piece moves between the two infrared led's blocking the transmission. This signals roomba to stop and backup. What happens over time is the sending led thing gets dislodged and moves slightly. The receiving led can't sense the signal so it thinks the bumper is depressed.

Hard to explain, but I have fixed the problem by shimming the led back in place and worst case, I drilled the hole in the plastic piece a little larger. Solved the problem and I have recaimed several roombas that were considered scrap. Irobot should fess up to this known problem and issue a fix for everyone of the defective units.

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BUT IF ALL THIS IS ALREADY TRIED AND PROBLEM IS SAME AS BEFORE THEN YOU WILL HAVE TO FOLLOW THE ROOMBA REPAIR GUIDE:----
THIS GUIDE IS VERY MUCH DETAILED WILL ALL REPAIRS,JUST CLICK THIS LINK BELOW AND FOLLOW ROOMBA REPAIR GUIDE INSTRUCTIONS:---
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