I can load external filament and it loads it, unloading works mechanically without problems but I always get the above error message. In other words, the H2D believes that there is still filament somewhere - but this is not the case, neither in any PTFE tube nor anywhere in the extruder or the nozzle. I have opened the extruder several times now, emptied the nozzle, the tubes are clear and still this error message appears, even though there is no filament anywhere. So at the moment I can load a spool externally, but unfortunately I can no longer load filaments from the AMS, because in this context, “the old non-existent” filament cannot be removed beforehand. it looks to me as if a sensor is not working as it should… anyone else have any ideas or had the same experience?
Have you tried turning it off and on? One time it thought it still had tpu from the side spool loaded. There was none. Restarted the printer and it went away.
yes, i’ve tried that several times, gone through several scenarios… reloaded externally… and unloaded again, where then the error message comes up again… even in the bambuslicer the external spool is displayed next to the ams where loaded filament should be in it, although this is not the case.
Sorry to hear that. Hopefully you can get it figured out. And hopefully it doesnt happen to me again. Sounds like I got lucky. If you open a ticket with that error code, im sure Bambu will know what it is right away. There are a ton of different filament sensors between the printer and ams.
yes, that’s what i thought with the sensors, the more i am surprised why the h2d thinks that there is still filament available, seems like some sensor is not working as it should… yes i have opened a ticket, hopefully i will get an answer soon… the first promle i had with tpu for ams filament
I recall someone (probably on the FB group) had this issue, and it was an errant whisp of filament (not a full chunk) that was floating in front of a sensor - not directly blocking the path. I know you checked the extruder, but I’d take the idler+filament sensor assembly off, and unscrew the hall sensors and double check inside that cavity. Might be as silly as accumulated filament dust.
If you can load and unload filament from the external side and run it through the internal buffer, then the printer should be working fine.
Are all the slots on AMS Pro 2 not loading, or is it just one?
Just one slot check that feeder unit they might have a filament sensor on the grey lever arm. See if there’s any filament buildup in there remove the sensor to inspect.
You could also disassemble the AMS hubs and check the filament sensors. Look for any filament buildup, and remove the sensor to inspect it more thoroughly.
I am having the exact same issue as CopyKnight with my H2D. I am unable to use my AMS for the same reason he stated. I opened a ticket as well. In the meantime I will see if a wisp of filament is floating in front of a sensor somewhere?
i spoke to support and tried two or three more things. i completely dismantled the extruder, removed the hall sensor, manually pulled the filament through the tills by hand, down and up. the filament ran smoothly through… there can be nothing more in it. everything was reassembled, but the error was still there. i am now being sent a replacement part. i hope that when i have installed this, the error will be gone. we’ll see. (this has nothing to do with the ams. because the h2d thinks that external filament is loaded. and yes i can load and unload it externally, but even after unloading it thinks that there is still something loaded).
Yes, the photos clearly highlight the issue showing filament still appearing to be loaded in the extruder even when it’s unloaded. It’s good to hear that you have some replacement parts on the way.
By the way, did you check for any filament buildup near the sensor pivot arm and the Hall sensor?
Hopefully, it’s not an issue with the board, since both sensors are showing the same filament error.
My issue does not relate to the AMS. Exactly like Copyknight wrote, my machine thinks there is filament in the head? So the AMS won’t load until that is cleared?
Let’s hope they send you the right parts to isolate the problem on the first try.
With the hall sensor not mounted to the filament arm, did you check what appears on the LCD display? Do you have a magnet to test whether it triggers on or off when the sensor is unmounted?
FWIW, I initially had the same problem on my brand-new printer.
I finally managed to clear it by fully disassembling the tool head to the filament Hall effect sensor path and reassembling it, and then it worked. I don’t know what caused the false filament detection. I didn’t find anything loose in there, and the little magnet seemed to swing freely when filament was inserted. It’s the worst kind of fix because I suspect it’ll return again one day!
Now I have another problem with the media pipeline: “HMS_0500_0100_0002_0001: The media pipeline is malfunctioning”. I have once or twice had it not fail, but this is the subject of another post I’ll make shortly elsewhere.
I’m having a similar problem tonight. Filament got stuck in AMS 2 and i removed from tube. But when i try to loa# it /o the toolhead it reverses out of the AMS
I guess ill try a cold pull to see if anything is stuck???
