I had to replace a first-stage feeder pretty early on. Bambu wouldn’t cover it. I wish the motor was replaceable.
Minha impressora Bambu A1, o AMS não está alimentando também… O que poderia resolver este problema???
Happening here as well, except the entire AMS Lite restarts, doesn’t load the filament, and throws an HMS error.
I think I’m experiencing the same issue with one slot on my AMS Lite. I’ve tried different spools and filament, but the problem remains while the other three slots work perfectly.
My AMS Lite is only three weeks old.
Fortunately, EU consumers are protected by a minimum two-year legal guarantee. These statutory rights cannot be replaced or limited by a company’s own warranty policy. If purchased directly from Bambu Lab, they are the seller and therefore responsible for providing an appropriate remedy for a defective product.
I also have legal expenses insurance here in the Netherlands, so if necessary, I’m prepared to enforce those rights.
Hopefully that won’t be necessary. Let’s see how Bambu Lab handles it.
mine is also relatively new and getting that issues…damn irritating and wasting my time to troubleshoot and end up not knowing where the F the problem is.
I had a single AMS Lite slot that kept throwing “Failure to Feed” errors. It was fixed by checking the PTFE tubes at the filament hub. This may help if you’re seeing the same thing.
What I think is happening: Where the filament passes from the PTFE tube into the filament hub, there needs to be a smooth transition with no surface for the filament to catch on. If a tube isn’t fully seated in its hub connector, or its end is cut at an angle, it can leave a small step or edge at that transition. The filament catches on it, the feed motor meets enough resistance to trigger the error, and the feed attempt stops.
What I did:
- Pulled all four PTFE tubes from the filament hub.
- Checked each tube end and re-cut any that were angled. I used a sharp cutter and made sure each cut was square.
- Re-inserted each tube and pushed it in until it was fully seated and flush against the bottom of its connector in the hub.
- Re-fed filament and ran a multi-color test print that previously failed on that slot.
Result: The slot stopped failing after I did this.
Suggestion: If you have a feed error on one slot, pull the tubes and check these two things before replacing parts:
- Each tube end is cut square with no angle.
- Each tube is fully inserted and flush to the bottom of its connector in the hub.
This is what worked for me. It may not fix every feed error, but it’s a cheap check to do first.
I was having the same issue with a new A1 combo and the #4 position on the AMS Lite. During troubleshooting attempts, the #4 position also began failing to automatically advance the filament when it was inserted into the funnel.
I disassembled and inspected the feeder unit but did not find anything obvious. I also pulled the feeder tube from the filament hub and trimmed the end then reinserted. I should have inspected the hub but failed to do that. Regardless, one of these two changes seems to have eliminated the feed issue. I have successfully made three prints from the #4 AMS position.