I experienced a massive nozzle clump and now my nozzle won’t heat up due to a sensor error. It appears a bronze wire was damaged on the hot end assembly. How am I supposed to remove the nozzle or clean up the mess? How do I fix this? Why doesn’t the print failure detection ever work?
If it won’t heat up & you want to save it, you’ll have to use a heat gun.
Your gonna need a new fan also, as the housing looks cracked.
What other options do I have, this thing isn’t even a year old
I held the fan to the side, but the heat gun still melted it. This is not fun…
A picture from the front would help.
Also, don’t try to remove it all at once, heat a little & pull off some plastic…heat again, remove more plastic & so on. Try to remove plastic around the clip so you can remove the nozzle.
If you have to, take apart the extruder so you don’t melt anything else.
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I had the same problem. I dismantled the head and fitted a completely new hotend heating assembly. I also replaced the two fans.
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Using a soldering iron will take longer, but it might be easier to remove pieces safely.
Dear Bambu Lab Customer,
We hope this letter finds you well.
We are writing to inform you again of an updated product recall and safety notice regarding your recent purchase of the Bambu Lab A1 3D printer (the “A1 Printer”, refer to the figure below). We are initiating a recall process due to a potential defect in the heatbed cable.(read full details).
Ignore this message if that is an A1 Mini .
Where can I find info on how to replace the A1 nozzle fan and it’s shroud?
thanks
I’ve had mine for 10 days and 5 prints and then a rogue filament decided not to stick behind my back - it globbed all up into the release mechanism for the hot end. I just couldn’t get it clean enough to operate.
The instructions for changing the heater are very clear and I’ve found it very easy to work on. Should have ordered the spares at the time I got the printer instead on a bunch of nozzles 
Yesterday I had a very fiesty Mini decide to poop it’s pants. Came into the office to find a 24g bulb being dragged around the bed… looked closer and it was about 90g total, all up in the mix, sock pushed out and hanging down.
Heated up the extruder, and the bed, plopped the ball on the bed and checked it with a laser thermo, it hit 65 and I started tugging with a pair of tweezers. Took about an hour but spot clean and I applied the no stick paint basically everywhere, so far so good but eh, what a hassle…
That said, it was amazing smoot to fix and I even swapped out for a new extruder and while cleaning the cooling fins kicked off another print.
I was expecting more damage, and aside from the time spent, nada, compared to 4 years with various other rigs (mainly creality) this is cake.