Hello
I have the following problem
The AMS on my printer feeds the filament to the extruder, but then retracts the filament and displays an error message [0700-8007 173720].
The extruder and nozzle are free, however.
If I insert the filament externally, the Extruder works fine and I can print normally.
I have the feeling that the filament is not being fed far enough.
I’ve already replaced the motherboard and tested all the connections on the AMS.
Have you tried manually running a couple of feet of filament into each AMS nozzle without hitting anything.
Alarm numbers imply an AMS problem.
feeds filament to the extruder but then breaks off
Filament breaks off sounds like the filament strand snaps in half. Is that correct?
Aside from the title, it sounds like the filament stops part of the way into the AMS nozzle. Is it all 4 nozzles, just a single nozzle or something entirely different?
Hey, thanks for the answer.
So the filament goes through the AMS all the way to the extruder/hotend.
It seems the extruder can’t get the filament to the nozzle, so the AMS pulls the entire filament back in, and after a few attempts, the error message appears.
But if I remove the PTFE tube at the top of the housing and then manually push it to the extruder without AMS filament, the print works perfectly.
I previously had a defect with my AMS, which meant I had to replace the motherboard. After that, the error message kept popping up.
Have you opened up the extruder to inspect the extruder tension? If you can push filament through to nozzle and build plate but the extruder can’t pull/push filament out the nozzle on it’s own, maybe the filament wheels are worn/clogged or there is not enough tension on idler so filament slips. There is a filament sensor directly above the extruder.
What is the fault you are getting? There are sensors all along the filament path from the AMS all the way to the build plate and the wiki lists them.
I looked up the fault code and while the 0700 seems to imply an AMS problem, I can’t find the rest of the string and in some respects it doesn’t match Bambu’s numbering scheme.
You might consider popping off the bottom inner cover of AMS or wherever motherboard is located to make sure everything is connected properly.