iRobot Roomba i8: Roomba i8 clean light circling only

Thu, 01 Jan 2026 19:03:24 -0700

I can't get the roomba to connect to the app, it wont do anything but the clean light is constantly circling. I've tried resetting it holding clean down 20 sec also all 3 buttons down for 20 secs. Light will go out like 5 secs and turn back on and do the same thing. I got a new battery for it. I've cleaned all the sensors that I know of, I've tested most of the parts with a variable dc supply the vacuum might need to be replaced I couldn't get it to run it would kind jerk a bit but thats all I could get it to do. The automatic charging tower light turns on when you place the i8 on it, it doesn't activate sucking the bag in there is new. I've looked all over for videos but there isn't a bunch on this model. I'm about to take it apart again and check sensors again. Is there a way to test sensors with multimeter?Do you know what's wrong with it?

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iRobot Roomba i8: Roomba i8 clean light circling only