20 Most Recent iRobot Roomba 4210 Bagless Robotic Vacuum - Page 6 Questions & Answers

Definitely check the yellow casters on BOTH brushes. If too difficult to remove with fingers, pull off gently with pliers. They should be cleaned well and any small debris removed with toothpick if needed.

It will either need ...emptying.....recharging ...or pairing with the dongle which is designed to stop the roomba from going outside its designated cleaning zone.

Battery needs to be replaced. It is worn out.

Check your suction. If there is no or little suction at the hose end then check for a plugged hose and all the suction areas. Make sure your filters are clean as well. Should be one and possibly two.

What does the red light mean on irobot Google Search ,,try this link

YOU HAVE HAIS STUCK INSIDE BRUSHES GO TO YOUTUBE THEY HAVE A VIDEO HOW TO FIX YOURSELF