Error: Right extruder has no available Standard nozzle on H2D issue

Bambu Lab H2 Series
1

Never had this before the most recent settings update that pushed last night.
I usually never hit the sync button and it has never been a problem until now.

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Looks to me like the H2D is being treated like the H2C. Resulting in a non-applicable message and needing to sync multiple times and arrange differently to send a print. There is no nozzle count for H2D.

3 Likes
2

The same thing’s happening to me

3

When looking into another bug, I found something that seems directly related to what you are seeing with the H2D being treated like an H2C.

I’ve dug through the code and found what appears to be causing this, although it would need confirmation against a live setup to be 100% certain. The H2D has dual extruders with 1 nozzle per extruder (either Standard or High Flow on each side), while the H2C also has dual extruders but the right extruder can have up to 6 nozzles and can mix Standard and High Flow. That capability difference is not properly respected in a couple of places in the logic.

There seem to be two related issues:

  • Bug #1 – During printer sync: When you sync, the code checks if multiple nozzle types exist (e.g. both Standard and High Flow in the nozzle rack). If they do, it flips the machine into a “Hybrid” multi‑nozzle mode. The problem is that it does not first verify whether the specific printer model actually supports multiple nozzles per extruder, so the H2D ends up being treated as if it were an H2C with a multi‑nozzle right extruder.
  • Bug #2 – UI handling: Once “Hybrid” mode is active, the UI shows separate Standard/High Flow groupings for filament–nozzle assignment. Again, there is no check that the printer really supports multiple nozzles per extruder, so the UI presents options that simply do not apply to an H2D.

That chain leads to your error:

  • Sync incorrectly puts the H2D into a Hybrid multi‑nozzle mode intended for the H2C.
  • The UI lets you assign filaments across Standard/High Flow groupings.
  • Validation later expects a configuration compatible with an H2C‑style setup (up to 6 nozzles on the right side), but the H2D only has 1 nozzle per extruder.
  • The mismatch triggers: “Right extruder has no available Standard nozzle”, even though the physical H2D hardware is fine.

A proper fix on the software side would be to always check the printer’s actual multi‑nozzle capability (for example via something like an extruder_max_nozzle_count value) before enabling Hybrid/multi‑nozzle features, both in the sync logic and the UI. That would stop the H2D from ever being treated like an H2C and should prevent this error for H2D users going forward.

2 Likes
4

I had same problem “Error: Right extruder has no available Standard nozzle, current group result is invalid. Please adjust your grouping or click to set nozzle count”.
Fix. Remove printer from system presets in bambulab printer menu and then add it again.

Worked for me

3 Likes
6

This Fix works, thank you very much!!!

1 Like
7

I hit this today.
I think the issue stems from opening a 3mf that was created for an H2D (in my case) on an older version of Bambu Studio.

I was able to work around this by changing printer profile to my P1S and back to my H2D. The error and issue went away.

Good luck!

1 Like
8

Thank you for your help
in my case It worked as well, when I switch first to my P1S and then back to my H2D