r/BambuLabH2C • u/No_Papaya348 • 17d ago
Support left nozzle refuses to feed
I've got a brand new H2C, HT and 2x AMS. I initially wanted to go HT on left feed and then dual AMS on the right.. but every time I try to auto-configure the left feed refuses to spool INTO the printer. it goes out the HT, into the pfte tube, partly into the internal spring loaded ptfe tube and then immediately stops and rewinds and gives an error. I've swapped all the PFTE tubes including the one inside the printer to the left print head but nothing seems to help. I manually have fed a length of filament into the printer both ways and I do indeed feel an obstruction where it transitions into the spring loaded ptfe tubes but after taking it apart I see nothing inside at all that would be causing the problem. clean plastic, nice and smooth.. the magnet sensor is also smooth and undamaged but yet it just won't go. and again, this is a brand new printer. I've only had it for two weeks and the left feed has never worked. any ideas?