Roomba does not fill upper tray.

If Roomba continues to indicate the bin is full after you have emptied the bin, it means you have not thoroughly cleaned the bin full sensors and/or the sensor ports. After you have cleaned all six full bin sensors and ports, it may be necessary to clear the error by rebooting the robot.

Roomba i Series Bin Full Behaviors - iRobot

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The bin needs emptied or the bin full sensor needs cleaning.

good luck

It could be clogged with hair (when was the last time you cleaned it out?), it could be the battery isn't holding a charge any longer. It could be getting caught on something . How long is it running before stopping? I found I used to get about a two hour run from my Roomba, before the red light flashed. Then I started to unplug the charger and Roomba when it had a full charge and it wasn't needed. I noticed that after this the Roomba didn't run as long, maybe one hour, before needing a charge again. I leave it plugged in all the time now.

Hair dryer. Remove both tray inserts and dry thoroughly, paying special attention to the sensor area in the center of the upper tray.

The charging circuit on the main board is fried. This is a common issue. You need some good electronic repair skills, and equipment, to replace the problem components

If your Roomba goes "uh-oh", beep-beep-beep, that's a 3-beep error code, indicating that your vacuum motor is stalled. Remove the grill from the outside (back) of the dustbin and make sure that the impeller (looks like a fan) turns easily and is not clogged with dirt. Then try to run the robot with the bin ON but the grill OFF. You should be able to tell whether the vacuum impeller is spinning. If not, you'll need a new bin. You can confirm wth customer support by calling 1-877-855-8593.

Yes, it probably needs a new cleaning head module, if your bearings are clean and the brushes still don't turn.

run your roomba through a self diagnostic test. I have posted the link below. Tell me your findings. http://mysite.verizon.net/gsplews/Diagnositic-Tests_Proc.v.0.5.htm

unfortunately the batteries on the roombas can go bad and not hold a charge and need to be replaced, also you should check all the brushes and wheels on the bottom, if they are bound up it would stop the roomba from working. the two brush rollers can be removed by pushing on the two tabs just above them, try and clean any hair from them. if its real bad you should buy the maintance kit from them witch gives you both brushes and filters as well.