Vacumn stops running after about one or two minutes then won't come on again for about 30 seconds.

Overheating? Bag full? Vacuum airways full ?

It's sounds like a bad battery. Try taking the battery to a auto parts store or tool store to have them test it.

Replace the switch! It shut down when battery get depleted. and then when you start it again the cycle is shorter because the batery regenerate but not as previous cycle.

Service it

You probably have a sensor that needs attention and is clogged up so unclog and see if that takes care of it

# 1 myou just take the bag out make sure ytou sponge filter is in place athe top and turn it on the power switch just turns on ,machine ther is no wet dry switch just an empty bagless cannister is all you need make sure the ball outlet in vacumn is working it stops water from overfilling cannister # 2 just use the proper bag and attachment to vacumn up the drywall dust a good building supply store has special sanding attachments for vacumn so you can sand and vacumn at the same time

replace the bag then, duh.

If you have a 400 series Roomba, try removing the battery, then holding down the power button for ten seconds, then recharging the unit before you run it again.

If you have a 500 series Roomba, don't take out the battery-- just press and hold the "spot" and "dock" buttons for about fifteen seconds. The Roomba will play a tune, and you can then charge it and try running it again later.

When you say, "just stopped", did the MOTOR stop operating and there's no sound from it at all? Or, is the motor still working or sounds like it does, and it stopped vacumning?

If the MOTOR stopped, most likely there is a short somewhere in the connection at the motor. Think 'repair shop'.
If the motor still runs and there's no VACUMN ACTION, think Roller Brush which operates by virtue of a rubber belt. Turn the machine on its side and turn it ON, keeping FINGERS !AWAY! from the roller area. If the Roller Brush is not moving it may be that the belt has slipped off or is broken or simply too loose to turn the Roller. Also sometimes debris such as strings, long hair, carpet strands/fibers will become wrapped around the roller especially next to the roller bearing/brace points, to the point of binding so tightly that the roller will no longer be able to actually roll which would now prevent it from 'Vacumning' or sweeping dirt and such up into the vortex of the vacumn chamber. In which case, !!UNPLUG!! the machine, use small scissors to cut away the material wrapped around the roller paying particular attention to the brace point areas.

First drain the battery completely and then take out battery and charger and hold power button for 30 seconds and then clean the roomba with compressed air take out all compartments and blow air thoroughly everywhere especially near the wheels where the wheel sensors are. Leave battery to charge for full day and try to run.