Hello,
I have a Creality Hi Combo and I’m receiving the FR2849 error: “Filament cannot be returned to the CFS hub.”
The filament is completely stuck inside the system. It cannot exit the hotend/extruder, and the CFS cannot retract it. The extruder makes a repeated clicking noise when it tries to move the filament.
There is no accessible place where I can cut the filament, and I also cannot remove the PTFE tubes because the filament is trapped inside them. I checked the buffer and cannot see any blockage there. The filament is visible along the entire path between the extruder and the CFS, but it cannot move forward or backward.
Has anyone experienced this problem? How can I safely release the filament without damaging the extruder, PTFE tubes, or CFS?