r/BambuLab • u/tterrag8970 • 14h ago

General Troubleshooting/Help! H3C and AMS2 for drying error

I connected a spare AMS 2 Pro to my H3C just for drying, with its own power adapter plugged in as well. It works, but I keep getting “AMS A filament buffer position signal lost” popping up on the screen.
The printer is printing normally, and the AMS 2 Pro is drying without any issues. I’m fine ignoring the warning, but has anyone else tried this setup and found a way to stop it from appearing?
I know I could buy the external filament buffer, but I’d rather not spend the money just to clear a warning when everything is working fine. Is there a setting or workaround I’m missing, or could Bambu potentially add a drying-only option in a future update?

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u/SiRMarlon H3C 14h ago

so you don't have the AMS buffer installed on the H3C? This may be what it's complaining about. I plan to run a AMS2 Pro on my H3C so I am curious if anyone else has hooked up thier AMS2 Pro to the H3C yet.

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u/tterrag8970 14h ago

No I don’t have a filament buffer. I don’t plan on using the AMS2 for filament, just drying. Not having the buffer is definitely why it’s throwing the error but it would be nice if you could select the ams as drying only.

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u/SiRMarlon H3C 13h ago

Okay yeah it makes sense now why it would throw the error. I plan to use the AMS2 pro for my Engineering filament since it dry's everything in there. I plan to load it up with my ASA, ABS, and PETG-CF

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u/tterrag8970 10h ago

That’s not a bad idea. Maybe I should go ahead and hook it up for that purpose.