Today I encountered an error in the printer.
It started off with 2 earlier errors on stuck filament. But once checked and reheated nozzle and just retry, it started to continue printing again. So didn't think too much of it, although it seem to me that the print quality was somewhat worse that I had seen before.
As I was printing a large project (project 2), it the printer didn't notice that there was no more filament flowing out of the nozzle and continued printing. So when I came in after a night of printing, the nozzle was way up over the actual print and moving along as if it was still printing. I pauzed the print, and it immediately threw an error on the filament cutter. Retried 2 times but it didn't fix it. Tried retracting the filament, but nothing happened to solve the isse.
Had to open the filement feeder part using the instructions on the part itself and some help from intertnet. Turned out to be less scary then one would think in the first place.
Once opened up, I could see the filament and I could also see the cutting point. And it was nicely cut at that point. But when I took the filemant tube off, I could see a very small part of filament sticking out. (I should have made pictures, but forgot). And the rest was in the tube and didn't look damaged or blocked, so should not give an issue.
I tried to pull on the tiny part sticking out of the filament feeder, but it just broke off at some deeper point. So removed the sprocket wheel and spring (which jumped away, but I noticed where it went so I could tretrieve it) and was able to release all the left filament. Built the feeder back together, connected the filament tube again, and mouted eveything to the printer head.
Restarted the printer and ran a full calibration just in case.
Started a small print to check if all was good now, and it printed just fine.
Problem solved.