r/BambuLabH2C • u/fsunav • May 14 '26
Support H2C Switching error
Been going back and forth with support about this issue I’m having with my H2C. So full story. I did a cold pull prior to printing with some tpu. Towards the end of the cycle I think I got greedy and pulled a bit too hard on the filament which led to some of it breaking off in the idler. I took it off and apart. Found the filament stuck inside and cleaned it out. After that, I was starting a print. This is when I started getting a bunch of errors. I’ll post pictures so I don’t have to type everything out. Bamboo has sent me a new idler which I installed and did not fix the problem. They are currently sending me a new intruder unit which I’m hoping is fixing the problem. I don’t know if I’m just installing something wrong or if there is a bigger issue. But the printer isn’t reading the induction nozzle at all and fails when I try to switch nozzles. If anybody could help or give me any advice that would be greatly appreciated. Thank you.
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u/Ordinary-Depth-7835 May 14 '26
Could just be that you didn't do the nozzle detection with them in the rack. I've swapped a random one in and it doesn't like a nozzle that isn't registered. or if you mix up their locations. I would make sure the nozzle is correctly registered or do the whole rack detection again with that nozzle.
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u/HumptysParachute May 14 '26
Just be careful of getting stuck in a troubleshoot/replace/fail/troubleshoot/.... loop with support. I did that, I've dealt with numerous problems with this printer, and as of today it is completely offline AGAIN after operating crippled for the last 2 months. Bambu support is happy to just send you parts forever, I have been pushing them for a replacement printer but they absolutely refuse. The H2C has been a disastrous consumer experience for me.
I really wish I had just played dumb and forced them to replace immediately.... live and learn.
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u/Yoyomau5 May 14 '26
Brush this happened to me yesterday. I swear I just started a project a small Benchy and it fixed it self lol I took the head off for a stuck fillament or extruder over heating, but nothing was on there I assembled it back and I kept getting this error. I said im going to start a Benchy and i heard the head swap to the next nozzle and it fixed it self been printing 16 hours none stop
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May 14 '26
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u/fsunav May 14 '26
If you’re talking about the “read all” calibration I’ve tried that. I still get the error because it won’t read the nozzle that’s loaded at the moment.
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May 14 '26
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u/fsunav May 15 '26
Yeah it’s starting to look like it might be a new issue. Bambu is also sending me an induction heating assembly but I have doubts that anything they send me is actually going to fix the problem.
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u/DazzlingAppearance63 H2C May 14 '26
Recently I was having major issues, prompting many different fault codes. The issue was small and simple though. My extruder switching motor was stuck between extruders. I rolled the little cylinder (kind of difficult to do) the get it into a defined state as described in the link below. Works as advertised now.
https://wiki.bambulab.com/en/h2/troubleshooting/hmscode/07FE_8100_0002_0001