
If your Centauri Carbon filament is not loading, there are a few things I'd check before assuming something is wrong with the printer. Most of the time, the problem is somewhere along the filament path, and it can be something as simple as the filament not reaching the extruder correctly.
First, cut the end of your filament at an angle and try loading it again. A bent, flattened, or rough end can catch inside the PTFE tube instead of feeding all the way through. I also like to straighten the first few inches of filament before inserting it because filament coming off the spool naturally wants to curl.
Pay attention to how far the filament makes it. If you can feel it stop before reaching the printhead, disconnect the PTFE tube and check for a broken piece of filament inside. You can usually push a broken piece through the tube using another length of filament.
If the filament reaches the extruder but the Centauri Carbon still won't pull it in, heat the nozzle to the proper temperature for the material and try the loading process again. Listen to the extruder while you're doing this. Clicking, grinding, or the gears spinning without moving the filament can point toward a jam in the extruder or hotend.
I'd also check the extruder gears for filament debris. A previous jam can leave little pieces of filament around the drive gears and prevent them from properly grabbing the new filament. If you recently had filament break inside the machine, there's a pretty good chance these two problems are related.
Another thing worth checking is the nozzle. Sometimes what looks like a loading problem is actually a clogged hotend. If the extruder grabs the filament but can't push it through the nozzle, you'll want to troubleshoot the clog rather than the PTFE tube.
The easiest way to narrow this down is to follow the filament path. Start at the spool, check the PTFE tube, then the extruder, and finally the hotend and nozzle. Wherever the filament stops moving is usually where you'll find the problem.
I wouldn't start tearing apart the entire toolhead immediately. Try a fresh angled cut on the filament, make sure the PTFE tube is clear, heat the nozzle, and try loading again. Those simple checks can solve a surprising number of Centauri Carbon filament loading problems.