Question about Roomba Robotic Floor Bagless Vacuum

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Roomba Discovery 4120 barely moving

My Roomba Discovery 4120 has suddenly slowed down to a crawl. I mostly disassembled it (couldn't get the white lid to full separate from the bottom piece) and pulled out lots of dust bunnies. We've got a cat that puts out a good bit of hair so I've always had a chore of cleaning the brushes and clearing dust out of the sensor areas.

Any ideas on why it is moving so slowly? Thanks!

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I don't have the same roomba that you have, but I had a lot of dog/cat hair stuck on the fan in the trash bin section. Once I removed that it started to work again. I used an air compressor to give it a really good blow out.
Here is a link that might help you out.
http://www.robotreviews.com/chat/viewtopic.php?f=1&t=10960

Phil


Posted on Jan 10, 2009

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1 Answer

My roomba discover started running realy slow or barely moving when on carpet


Replace your belt also check the end-caps on your beater bar to see of they are packed with fibers. clean out any you find.

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1 Answer

Roomba dirt in filter but NOT in bin


possibly the vacuum fan is plugged up or not spinning fast enough to pick up heavier items. disassemble the back canister and clean the fan chamber.(THis is one area of regular maintenance). if it is all clean then try to replace the motor. The other possiblity... You have one damn clean house. :)

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When I push the clean button. (roomba discovery) it just makes a 'quack' sound and doesn't move.


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1 Answer

My Roomba Discovery doesn't appear to hold a charge


cor2an,
That sounds like a classic battery failure in the Roomba discovery series. There are sensors inside the battery pack that go bad too. Either way...it's not very practical to repair the battery....the best shot you have would be to order a replacement battery. You just pop the old one out and then put the new one in.

They are available from iRobot for $69 at this link: http://store.irobot.com/product/index.jsp?productId=2799714&cp=2804606.3358509&ab=CMS_AccSuper_Roomba400_102308&parentPage=family

There are sources of less expensive (about $35) Genuine iRobot quality batteries also. You could try www.RoboticVacParts.com at this link: http://cgi.ebay.com/OEM-iRobot-APS-battery-Roomba-400-4XXX-Discovery_W0QQitemZ270412120603QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3ef5d1821b&_trksid=p4634.c0.m14.l1262&_trkparms=|301%3A1|293%3A1|294%3A30

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1 Answer

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2 Answers

Dont move forward.


Blow out the unit with compressed air, particularly around the wheels and under the bumper. Tap the bumper with your hand.

If your Roomba stops and beeps at you, count the beeps AFTER the initial "uh-oh" tone. Then call customer support (1-877-855-8593) for assistance.

Good luck.

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1 Answer

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I had a similar problem, I just took my Roomba Red apart and put it back together about four times before I fixed it.  In my case it turned out to be a dirty sensor, fixed as described at
http://mysteryroad.blogs.com/photos/roomba_gallery/xintroroomba_3549.html

Before you open it up I recommend following the diagnostic tests to see if its a physical problem (bad motor belt, hair stuck around the wheel) or a sensor problem (dirt makes Roomba think it is stuck when it isn't).  If you follow the diagnostics one of them will move the Roomba wheels while ignoring the sensors; if the wheels move fine then you probably have a sensor problem.
http://www.roombareview.com/swiftracer/roombareddiagnosticsmode.shtml

-- Ben www.benzado.com

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1 Answer

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just learning, but sounds like the one that doesn't spin freely is the good one.

The other may have a broken belt.

http://www.roombareview.com/swiftracer/roombabeltreplacement.shtml

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