Hi everyone!
I have an A1 with the AMS Lite and it has been giving issues lately. First, during multicolor prints when it goes to load new filament it usually struggles and sometimes fails to load. It seems like the AMS just isn’t pushing the filament far enough. This just keeps happening. I did have my AMS mounted on top of the A1, but I noticed that over time, the PTFE tubes were sagging a lot and almost creating a kink that was not letting the filament load properly. However, I just unmounted the AMS and made sure the tubes were not bent to much but the issue is still there. Also, during multicolor prints with my 0.2mm nozzle, it seems like it just stops feeding during the print. Not even just while changing filament. Does anyone have this issue? Or at least know what it could be? Right now I can’t complete a single multicolor print with the 0.2 nozzle. I have had the A1 for about a year.
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Hello, I’m new to the forum and can’t find a way to ask my question. I randomly selected this thread (sorry!). My questions:
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How do I create a request here?
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I’m using the Bambu Lab A1 with an AMS Lite. Everything works perfectly. But one filament spool keeps flashing. It’s incredibly annoying! I’m considering covering the flashing LED (white) with tape. Is there a solution?
Thanks.
when was the last time you replaced the PTFE tubes, Sounds like you should, any little kink in the tube could cause problems. Try setting the AMS up as recommended, with new tubes at the proper length and see if that will fix the problem
Hi Bambu-Friese, you my have not read enough post and this site has some funny requirements like that. I am having a simiular problem so I will start the new thread in the AMS lite category to see if we can get any help.
Hi Locoman, starting a new thread is a good idea. Then my inappropriate posts can be deleted here.
In the meantime, I’ve discovered that the rotating arrow circles determine the flashing arrow on the AMS Lite. My problem was the very delayed response. But I don’t understand the purpose of this clock wise rotation.
BTW: Is there a possibility to upload a picture/Foto?
Thanks for your reply, do you really think it’s the tubes? I did just switch the tubes around so the AMS side is now on the hot end side. It didn’t fix the problem of course. Maybe they are just too old and worn out? I have had these tubes on the printer for around 10 months. Is it typical to have to replace them? Also, yes I I took the AMS off the printer and put it back on the stand next to the printer.
The tubes is where I would start. I have replaced mine after only a few months. I put little retainers on the tubes to keep them together and pushing them on and off does tend to put a little kink in the tube and taking them in and out of the PETG connectors effects how smooth the inside of the tube which can cause how smooth the tube is which effectrs how easy the filament can slide in the tube.So try replacing the tubes. Be sure to get some with 2.5 mm inside diam.
Also I took a look at the extruder gear in the tool head and it looks a little dirty. Not super dirty, but maybe just enough to give trouble. I also found a piece of filament that I had removed after a .2 nozzle multicolor print fail. It looks like it was slipping a lot. I think the gear could be the issue. I will see what I can do about the tubes though…
Interesting. Didn’t know people replaced these this fast. I think I will just order new ones then 
It’s very hot in the garage I keep my printers so that might be a factor too.
I also ordered a new extruder gear assembly too so we’ll see if all of it helps. Thanks!
I’ll give an update when the parts arrive!
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UPDATE: The PTFE tubes arrived a couple days ago and I installed them. I also bought new extruder gears because of the old ones slipping a little. Once I took the toolhead apart I did notice that the old extruder gears were worn down a little, so I do think they also contributed to the issue (my A1 has around 1500 hours on it so it makes sense that they would be a little worn out). But anyways, I also remounted the AMS onto the wall behind the printer with the new tubes and it works! It seems like it was a combination of old extruder gears, old tubes, and the extreme bends the top mount had. I still have an issue printing with my .2 nozzle with black PLA Matte, but it seems like that’s just because of how soft that filament is. That is the only color that doesn’t print. Thanks for the help everyone!
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