I’ve owned my printer for 2 weeks. For the first week, all of my prints were flawless right out of the box. I had 4 spools loaded into the CFS. All of a sudden, I tried to test print with PA6. Up until this point I had printed with PLA and PETG-CF. The print all seemed to be working fine through the initial calibrations. The printer head then went to the back (by the poop chute) and just sat there at 300C. No warning, no errors, nothing wrong that I could tell by looking at the machine or Klipper. It just does nothing. Since then, every print does that. No matter the filament. I print from the spool fine. I’ve tried advancing the filament into the hot end manually and it will not advance when the filament is coming from the CFS. The filament detector works fine and the blue light is on. It just hangs and will not doing anything. Again, I’m not getting any error messages, so I’m not sure where to go from here. I did notice that some pieces of PA6 did break off into the CFS buffer so I opened that up and cleaned it out. The blue light is always on (not sure if that’s expected). I won’t be printing PA6 from the CFS anymore. But, now nothing works. Looking for any recommendations as to where to start. The problem has to be in the CFS somewhere.
I’m having the exact same issues. I just bought myself k2 pro 2 weeks ago also.
It has been printing awesome until I tried running PPA-CF through it. Now it does what yours does and hits 300 and basically freezes u. I have to hit power switch to cancel it.
At first I thought it was plugged up so I replaced the tip but that did nothing. Then I thought maybe I damaged something when removing cf from extruder….?
I have a support ticket submitted but it will probably be a response in Chinese!
I tried spool holder and first try didn’t work so I tried pushing harder on filament and got past a restriction and it printed fine. I think something is damaged in there from either carbon fiber or from taking extruder body off. I’m going to tinker around and see if I can find anything else
I have a feeling it’s the cutter creating a restriction maybe carbon fiber jammed it up and it’s not retracting 100%(on mine anyway) I’ll let you know when I replace it or clean it. I’m printing a file right now with spool so it’ll be later today that I dig into it.
Update on my situation. I have been printing fine on the spool. The cutter is also working fine. I believe the system is hanging on the “extrude” command. When printing from the CFS, it would always extrude, and that is where it would hang up. When loaded with the spool, if I try to extrude manually from the menu, it does the exact same problem. It goes to the back over the waste chute, heats to 300C and does nothing. Now, the only way for me to switch filaments is to load in a new filament and begin printing something… which of course doesn’t work because the filament hasn’t been loaded into the nozzle. After a couple layers of printing a test ring, I can see the old filament empty out, then wait until my new filament begins printing. I cancel that test print and then the next print is fine now that it’s fully loaded into the hot end. This has to be some sort of firmware or motherboard issue in my eyes. I had Grok search the forums and reddit and I saw a couple of other users that got sent a new motherboard for this issue and it corrected it. I’d hate to think a motherboard went bad in a week, but that’s what it is pointing towards, in my situation at least.
“heats to 300C and does nothing”. Just by curiosity, have you tried to change it for 295°C instead of 300°C ?
There’s no changing it. It doesn’t respond.