Thank you for this post. I learned a lot from your post while my robot vacuum cleaner is ABIR R30 and the seller was asking me to unplug the vacuum sensor tube to resolve the full dust bag red led always on after each suction while bag is empty. He wrote ;
《《 by the way, for new robot, pls disconnect this tube before using robot, how to disconnect tube , pls refer to this link: 拔掉气管 R30 - YouTube. 》》
What I’m thinking that either he knows nothing about this tube or he is trying to bypass the sensor to fool after sale warranty service .
I did as he said light turns green and found that now it makes suction for much longer time than before. And I don’t know if it will turn red when dust bag is full.
I need your advise with this issue. What he ment with 《for new robot》.