Eufy RoboVac G30 Edge Robot Vacuum

5 star product. I had a roomba previously (5 years I think), it needed a new bin costing $90. Bought this, a refurbished model at $125. The roomba sounds like a jet on taking off, the eufy is pleasantly quiet. I thought it may not have been good enough, but it was. I didn't use the setting with more suction. Normal was sufficient. Given that is was so quiet I considered using it at night. Used it 3 times. The fourth time it fell from the first floor and broke. I don't think it was the sensors. The brush was entangled with my wife's hair. Removing the hair was difficult. I believe that the eufy was at the edge and couldn't move because of the stuck roller brush. It may have rocked back and forth and fell. The roomba had rubber rollers so I didn't have to pay attention to that happening. Hair would gather at the sides. I'd remove them after. I put the vacuum back together, but I'm getting an error. The vacuum believes it's still stuck at the edge. In summary, clean the roller brush after each use. Update The error was Error 6 where I was informed to place the vacuum back where it was stuck. I placed it at the top of the staircase, still got the error. Took the vacuum apart, checked all the connections, still got the error. Decided to place the vacuum at the bottom of the stairs, where it fell to, just about 2 feet across from where it fell but about 12 feet below. It started working again. I ran it twice since. Got an error 1 once, nothing significant. Really pleased that it works.