This is my first post here, so I hope someone can help me with an issue I’m having.
I have a Bambu Lab A1 with AMS lite and I’m still quite new to 3D printing. So far, I have only printed single-color models, and everything has worked perfectly.
Now I wanted to try my first print using two different filament colors. The print starts with Filament 1 and then changes to Filament 2 without any problems. However, when the printer tries to switch back to Filament 1, the print stops with the following error:
HMS_1200-8006 – Filament cannot be fed into the extruder
I have already checked whether the filament can move freely through the AMS lite and the PTFE tubes. I have also checked and cleaned the extruder and nozzle to make sure there is no blockage. Unfortunately, the problem still occurs.
I’m using Bambu Lab PLA with a nozzle temperature of 220 °C.
What I find strange is that the filament change from Filament 1 → Filament 2 works, but the change from Filament 2 → Filament 1 fails every time.
Has anyone experienced a similar problem with the A1 and AMS lite, or does anyone have any suggestions on what else I could check?
Try putting the spools in slots 3 and 4 and see if the error still occurs. Or, to put it another way, whether it’s just a specific slot that isn’t working. Swap them: 1 and 4, or 2 and 3, and so on.
By swapping the spools back and forth, you should be able to figure out if it’s always a specific slot, if it doesn’t matter, or if it’s due to a specific spool. Maybe one of the slots is having trouble pulling the filament back.
Your goal is basically to figure that out first and then share your conclusions. Then you can troubleshoot the problem more effectively.
Thanks for the suggestion . I have already tried swapping the spools between the different slots, but unfortunately the problem occurs with every slot.
The first filament change, from Filament 1 to Filament 2, works perfectly every time. However, the problem occurs every time the AMS switches back from Filament 2 to Filament 1.
Well, at least that lets you rule out the possibility that a specific slot is defective. Have you ever paid close attention to exactly what happens when the error occurs?
Does your filament cutter cut the filament reliably? Is the rest of the filament squeezed out as poop? Pay close attention to what’s happening.
I took a look at the forum, and for some users, the problem was with the filament hub, which was dirty, clogged, or worn out. Or the tubes were bent too much. For some users, the filament sensor also works unreliably.
. I have already tried swapping the spools between the different slots, but unfortunately the problem occurs with every slot.