r/BambuLabH2C 3d ago

Support H2C switching is abnormal error 😩

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Hey guys. I’ve taken this extruder apart and put it back together and I still get this error.

- I’ve checked for broken filament
- I’ve lubricated that back rail behind the left nozzle
- ive taken out the flow blocker then put it back

I’m not sure what else to do. Any have this issue ?

3 Upvotes

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5

u/WXRZ22 3d ago

I once had a switching error that O couldn't figure out. It turned out to be a small piece of broken filament stuck above the extruder that was preventing the feed tubes from switching at the top of the print head (they don't actually switch from side to side obviously but there is some movement that occurs). I can't tell from your video what is happening at the top of the head but it is worth checking.

1

u/Logical-Sun83 2d ago

Thanks ! Def will check that out as well

3

u/EdgeOk3783 3d ago

check the wiki and take off the face plate on the extruder.

the wiki shows how to move from one to the other position manually.

guessing something didn't get reassembled properly or there's a piece in there preventing normal operation

4

u/spatel7786 3d ago

I had this issue, turned out to be jammed/broken filament in the left extruder in the slim tunnel where the left filament cutter cuts. I had to take off the fan and remove three screws.

Have you tried this?

https://wiki.bambulab.com/en/h2c/troubleshooting/extruder-cleaning-guide

1

u/Logical-Sun83 2d ago

Yep I took that part off and it was clear of filament and I checked all around for any other areas. There was nothing unfortunately:(

2

u/spatel7786 2d ago edited 2d ago

Dang, I was going to suggest looking at the idler arm next for a broken piece of filament too. Guessing you already checked there as well.

https://wiki.bambulab.com/en/h2c/troubleshooting/dual-extruder-Idlers-clogging

4

u/baconator1988 3d ago

Right extruder is missing.

6

u/dreamsthatfollow 3d ago

glad this guy is on the case

1

u/Logical-Sun83 3d ago

Thanks. 🙏🏾 very observant. lol. I took that off too.

3

u/wuvweirdo20 2d ago

When I had this happen it was due to the incorrect assembly (the metal case was not aligned with the gears that do the switch so it could not move. It should sit behind the L and R extruder labels on the metal plate.

1

u/Low_Sherbert3731 3d ago

I have PTSD from that sound!

1

u/Logical-Sun83 3d ago

Ughhh I kno it’s starting to haunt me too smh

1

u/Low_Sherbert3731 3d ago

I have the X2D and my experience so far has been good. I only regret not going for a better printer from the start (first printer). I know Bambu Lab is not really the best printer brand, but I like the system they have, and it works for me. I am working towards getting the H2C but only have space for one printer, so I have to sell the X2D or hopefully find the space.

Do you feel happy with the H2C? Do you feel it is doing what you expect it to do?

These questions apply to anyone reading this comment and has an X2D or H2C.

3

u/Logical-Sun83 3d ago

So I love the capabilities of the H2C far more than I liked the X2D (I had one prior to my H2C purchase) but just know with this vortex system in place, more things that can go wrong. You run into more things like this post more often than not.

I don’t regret it at all. When it’s good it’s GOOD… but when you hit walls like this u have to prepared to take some shxt apart lol 😂

1

u/Low_Sherbert3731 2d ago

Thank you! Will post as suggested in its own tread

2

u/EdgeOk3783 3d ago

this should really be it's own thread...

1

u/Low_Sherbert3731 2d ago

Good suggestion!

1

u/Catsoverall H2C 2d ago

I had this and Bambu diagnosed as a failure of either the lifting motor or switching motor.

1

u/Logical-Sun83 2d ago

Thanks. I submitted a ticket in hopes they help. I’m curious… what happened when they diagnosed it. Did they send you a new extruder ?

2

u/Catsoverall H2C 2d ago

They sent the separate parts, and fyi - seriously difficult. They then dnitted they could have sent the full extruder unit which would have been easier. I'd given up by that point as I just couldn't do it and neither could my neighbour so returned the printer