I have a P1S with an AMS, running the latest firmware.
When the filament feeders feed the filament, it gets stuck at the 4-to-1, I think at the motor itself. I can hear some motor type noises.
I took apart the 4-to-1 and cleaned things up. Nothing suspicious in there.
Any suggestions on what I should look at next?
Did you replace or check the PTFE tubes in the AMS? They are consumable and if the ID becomes larger than it should it can cause issues loading.
I’m having the same issue. All 4 slots. Reaches internal hub, and the first stage feeders just grind the filament.
Support told me the Internal Hub was possibly broke, had me take it apart, clean it and take photos of the entire assembly. Found worn hub gear, and plastic tunnel.
Warranty out, order the $55 new replacement hub, install it, redo all new PTFE tubes, filament feeds to internal hub, stops at some point there, grinds filament in first stage feeders.
Still no response from Bambu.
Printer has over 2900 hours, prints mixture of PLA, Matte, PETG, Bambu and Non Bambu filaments.
I have been running into the exact same problem without a solution. Only 1 of the 4 spots in the AMS works even after replacing tubes and hub…
I have exactly the problem that everything seems normal at first when feeding via slot 1. As soon as the filament arrives at the 4:1 internal hub, it is no longer fed in and is blocked. I have already checked the tubes and foreign objects in the internal hub. If I feed filament manually and turn the motor in the internal hub slightly, the filament is drawn in without any problems. Presumably the feed motor in the internal hub does not start when I feed filament via slot 1. What could be the reason for this?
@Bratzer Have you been able to find a solution to your problem in the meantime?
I have exactly the problem that everything seems normal at first when feeding via slot 1. As soon as the filament arrives at the 4:1 internal hub, it is no longer fed in and is blocked. I have already checked the tubes and foreign objects in the internal hub. If I feed filament manually and turn the motor in the internal hub slightly, the filament is drawn in without any problems. Presumably the feed motor in the internal hub does not start when I feed filament via slot 1. What could be the reason for this?
@Bratzer Have you been able to find a solution to your problem in the meantime?
Update: I have now replaced the AMS First Stage Feeder from slot 1 with the one from slot 2 to rule out a defect.
I have also removed the internal AMS hub unit again and could not find any visible defects or foreign bodies left behind. There is probably a defect in the Hall sensor, which currently no longer recognizes that filament is being loaded and therefore the motor does not start. I have now opened a ticket.
No not yet, I have come to peace with only 1 working spool in the AMS.
Last thoughts I had about it was that it might be related to a spool running out of filament and getting an error after that.
I am having same problem as PhilipFlip. Filament will not load on P1S AMS. Filament goes as far as the y hub. I have checked for clear passages and there is no blockages from filament. Given that I suspect an issue with a sensor or hub. It fails loading filament despite no blockages. I have watched all the videos and am at an impasse. Would appreciate any suggestions. For now I will just try not using the AMS.
Im also having the same problem, ive had the hub out. Checked and cleaned. To me it looks like the filament hits the gears and cant go passed. So od assume the motor isn’t working or there os too much tension(that doesn’t look adjustable) but its worked fine for months. Id understand it losing tension but not gaining it. Im at a loss.
Ive also tried the suggestion of reversing to firmware v01.07 from v01.08 with a reset and recalibration. Mad no difference. So put on a ticket and disconnected my ams.
I submitted a support request via the app and described the error and my attempted troubleshooting and was then sent the replacement part directly.
Has anyone discovered a solution? I’ve read through the replies here and haven’t seen any. I’m having an intermittent problem with a 2 month old AMS 2 Pro - the filament jams as it enters any of the 4 feeds. I’ve disconnected the AMS and tried to manually push the filament through and after quite a few attempts, everything works. I reconnect, run for a while, then the same problem.
I had the same problem found that the AMS Active Extrusion Wheel Assembly was the problem the plastic gear had sheared of the shaft.
it’s possible. I overhauled my AMS a couple of months ago, replacing nearly everything. That gear on mine had a little fuzz and junk wrapped at the axel but didn’t cause issues. I could see that I guess. The teeth were fine as was the extruder wheel. 1800 hours on mine. Saved it for back up
I’m finding a really similar issue. I have a P1S with 2 AMS connected via a hub. On the first one, I have PLA Glow (Blue) in the 4th slot that the printer can’t pull back after I print something. Sometimes it works, sometimes it doesn’t, but it’s failed 2 times now. I can pull out the filament with enough force, but I noticed tread marks on the area stuck and it feels like I have to fight the 4 to 1 motor. Apparently loading is fine, it just gets badly stuck there.
My issue seems very similar. The filament can push out of the AMS but either stops in the PTFE around halfway before the buffer, or sometimes can make it to the extruder but not into it (prints fine from an external spool).
If I hand-feed the filament (either through first-stage-feeder or directly into the hub once removed from the AMS), even while pressing the “button” down, there’s a lot of grinding and resistance. If I push and pull through the gear repeatedly it marks/cuts up the filament.
If I try to turn the gear with my finger (or the motor axle by hand) there’s a lot of resistance and it’s not smooth at all. Opened a support ticket but I’m hoping I can just fix it… I’ve only had the printer a few weeks and the honeymoon is officially over.