Charging error 3 fix on my $50 Roomba 560 - YouTube
Archive of stories about Error 3 – Medium
How To Fix Error 3 Roomba Vacuum Cleaner - Full Guide - YouTube
What does Roomba Error 11 indicate, and how can I troubleshoot and fix it? - Quora
Roomba j7+ I have just gotten error 30 this morning and worked fine then at 9PM it's happened 3 times and I've emptied the bin, cleaned the sensors. 90Seconds later it appeared.
iRobot Roomba 650 Wi-Fi Vacuum With Charging Base Saying Charging Error 3 | eBay