H2C and 0.2mm nozzle challenges

Bambu Lab H2 Series Troubleshooting
1

This is my first attempt to use the 0.2mm nozzle on the right side (induction). I’m using Bambu PLA matte filament.

I’m printing a model that is basically a board with numbers on it. On my first attempt, 2 hours into it it printed most of the board, then I got an error with extrude overloaded message. I had to stop the print, check the nozzle, remove the PLA, then test it again if it was extruding correctly, and it did.

So I tried again, and it started to print the first layer and the 1/2 way through it, no filament was coming out of he nozzle.

Is this a nozzle clog? Do I have to attempt the cold pull ?
Before we try to find the solution, why the problem happened in the first place? I thought PLA Matte was in the list of certified to work with 0.2 nozzle on the induction nozzle.

Did I miss anything?

Thank you,

2

PLA matte and a 0.2 nozzle aren’t the problem; It works perfectly, it must be something else.

You might want to upload some photos and the 3MF file.

Does any filament come out when you go to the printer and manually control the extruder - or, to be precise, when you load the filament?

Then the filament has to come out. If not, the nozzle is probably clogged. However, it is also theoretically possible that the extruder gear can no longer grip the filament at that exact spot because that part of filament has worn down. If necessary, manually retract the filament and cut it.

A cold pull can’t hurt either. After that, I would start digging deeper into troubleshooting.