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Roomba undocks and then immediately redocks

I press the Clean button, the roomba undocks but then immediately goes into dock mode and docks.

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I don't know much of anything about roombas, but that sounds to me as though the battery is not holding a charge. Check the voltage to see if it is normal. If not, I would replace the battery.

Posted on Mar 28, 2014

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: Brushes are clean, but Roomba stops and says clean brushes

I decided to take it apart and see if I could fix it because even if something inside went "SPROING" and I couldn't get it back together, it wouldn't be any worse than it was already.

FIrst, remove the dust bin part and the brushes. Then, there are four screws on the bottom gray panel which have to be removed first in order to get to the gears which hold the brushes. I did not remove the little sweeper brush on the front, but I just slide it through the hole in the gray panel.

Then in order to get out the orange section which actually holds the brushes, there are four screws which must be removed. The orange section is attached to a blue section. This entire unit comes out by sliding it toward the area where the dust bin goes, being careful not to tear the light gray rubber gasket which covers the side.

Once that section is removed, there are two screws on each side. These screws hold the orange thing to the blue thing. Once the screws are removed, lift up only the side which has the white squares into which the brushes are inserted. These are actually the back side of little gears. There is a face plate on the outside of the orange part on this end. The other end contains a bunch of wires and I was careful not to disconnect any of them.

The face plate has six screws which must all be removed. Use caution when removing the face plate. Hold it up so that all of the stuff doesn't fall out. It has a bunch of gears, little brass looking fittings and grease. Take care to only remove the gears which have the squares which hold the brushes AND do it one at a time unless you like working jigsaw puzzles. I used tweezers and a pin to clean the "gunk" consisting of hair, fuzz, etc., out of the little gears.

Reverse the process to put it back together. Hazel, my little Roomba, played me a happy little song and immediately went back to work. She seems as good as new.

Posted on Nov 20, 2008

  • 1 Answer

SOURCE: Roomba Scheduler will not dock

Clean the contact on the robot and it will dock.

Posted on Mar 20, 2009

  • 8 Answers

SOURCE: My Roomba 560 does not automatically dock as advertised either..

You may not believe this, but the new 500 series lighthouse virtual walls have both infrared and radio frequency communication. How they work and associate with the Roomba is pretty complicated. The best posting I've ever seen about how they work is here:
http://www.robotreviews.com/chat/viewtopic.php?f=1&t=11048

Check out that link to understand how the communication works.

If your Roomba is contained by the virtual walls, then you can assume the IR sensor on your Roomba us good....you should test that though. Then you might have to replace the "home base" which could have a bad IR transponder . New ones can be found for reasonable price at www.RoboticVacParts.com or you could order straight from iRobot for twice the price.

If the Roomba is not contained by the virtual walls, then the IR sensor on the Roomba is likely bad and you'll need to change the bumper on your Roomba. Again ....parts are available through ebay, or www.RoboticVacParts.com. Follow this link if you need it.
http://cgi.ebay.com/NEW-Roomba-500-series-white-bumper-510-530-532_W0QQitemZ270400281066QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3ef51cd9ea&_trksid=p4634.c0.m14.l1262&_trkparms=|301%3A1|293%3A1|294%3A30


Posted on Jun 20, 2009

  • 8 Answers

SOURCE: 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

Posted on Jun 23, 2009

  • 1 Answer

SOURCE: red flashing light with 6 beeps

It means you need to clean the sensors. I have had this problem every now and then. There are 4 plastic clear sensors that you can clearly see when you put roomba upside down.

I have found the best and most effective way to clean them is with a dust wipe. You push the dust wipe in with a cotton swab or even a pen, and rub it around the face of the sensors cleaning the dust off, and it will work fine again.

The reason you need to use a dust wipe like a Swiffer brand is that it is very effective and will pick up all the dust. You may not see the dust and you will keep getting that red flashing error though the sensor may look clean to you.

I just had that problem, and after I used the dust cloth, it's working fine again. Good luck.

Posted on Jan 15, 2010

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1 Answer

My iRobot Roomba 780 just won't start moving to do the cleaning. When I press the CLEAN button it moves back from the dock, turns 180?, and then moves forward about an inch and makes the uh-oh sound...


make sure all virtual wall lighthouses are turned off. Your Roomba may be getting a signal to not proceed if the lighthouses are turned ON and facing the Roomba

Feb 22, 2014 | Roomba 780 Robotic Vacuum

2 Answers

Changing the language on roomba pet series


You need to post a model numbers before I can help you.
Now, a three second search of the roomba help section on the roomba website turned up this:


All Roomba 700 Series and select 500/600 Series can provide troubleshooting messages in either English, French, German, Spanish, Italian, Dutch, Danish, Swedish, Norwegian, Finnish, Polish, Russian, Portuguese, Japanese, Korean, or Chinese.
Roomba's default language is English.

700 Series: Instructions for Setting the Language
  1. Turn ON your Roomba by pressing CLEAN.
  2. Press and hold DOCK until it beeps and says the current language.
  3. Release DOCK. Roomba is now in Language Selection Mode.
  4. Now press CLEAN repeatedly until you hear the language you want.
  5. Press and hold CLEAN to turn off your Roomba and confirm language choice.
500/600 Series: Instructions for Setting the Language
  1. Turn OFF Roomba. (Press and hold CLEAN until Roomba's lights turn off.)
  2. Press and hold CLEAN until Roomba beeps and says the currently selected language.
  3. Release CLEAN. Roomba is now in Language Selection Mode.
  4. Press CLEAN repeatedly until you hear the desired language.
  5. Press and hold CLEAN to turn OFF Roomba and confirm the language choice.

Jan 25, 2014 | iRobot Roomba 550 Vacuum

1 Answer

My roomba 530 cleans just great, but it will not return to the docking station--it just stops in the middle of the floor without any warning. I push the dock button, etc. to no avail.


I sometimes have the same problem with my Roomba 530 (named Ethel). Make sure the signal transmittor on the docking station and the signal receiver on the top of the Roomba are clean. You can use a cloth or paper towel with a SMALL amount of window cleaner to run around both of these signal devices. I also like to clean the metal contacts on the station and the corresponding contacts on the bottom of the Roomba at the same time. This won't make a difference for the docking but it just assures that the vacuum will charge efficiently. If this doesn't work, you might need to have the unit cleaned professionally unless you feel comfortable about taking the unit apart and cleaning it yourself. I did this and Ethel has worked fine ever since!
If this helps, please come back and rate my suggestion!

Jun 06, 2011 | iRobot Roomba 530 Robotic Vacuum

2 Answers

My roomba 560 approaches the dock and attempts to dock. However, it never seems to align correctly and backs out. This is a continuous process. It simply will not dock at all. Any suggestions?


Check the connector on your ROOMBA, there is a switch that open the ground when you connect the charger direct to the ROOMBA and a lot of times it get stock and remain open. Using a small screwdriver press the metal plates to force to close.

Oct 08, 2010 | iRobot Roomba 560 Robotic Vacuum

1 Answer

4210 and 4230 won't charge-new batteries.


I've been having the same problem myself. The charger is apparently built into the roomba main board. From what I've read there are two MOSFETs U2 & U4 that can go out and require replacement to fix the problem. More info here
http://www.robotreviews.com/chat/viewtopic.php?f=1&t=3909

Jun 28, 2009 | iRobot Roomba 4210 Bagless Robotic Vacuum

1 Answer

My Roomba does not want to dock


Need more info.
Does the unit go into search mode? "SPOT & CLEAN" flashing? It actually tries to search?
Do you have another roomba to test your dock on to see if IT will dock? If it tries but just cant, then either the dock transmitter, or the roombas receiver is dead. (The round antennae thingys on the dock and the bumper) replace these would be the first point.

Jan 21, 2009 | iRobot Roomba 4210 Bagless Robotic Vacuum

1 Answer

Roomba Scheduler will not dock


Clean the contact on the robot and it will dock.

Nov 16, 2008 | Roomba Robotic Floor Bagless Vacuum

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