● S2.0 Allen key
Click the "Filling Material" icon-"ACE1" on the display screen, select the filament and click "Return" to observe whether the filament can be returned to ACE Pro.
If the filament cannot be returned to ACE Pro, loosen the pneumatic head behind the printer and check whether the filament can be manually pulled out.
If the filament is pulled out, click Resume to try printing.
Check whether the extruder assembly extrude the filament smoothly.
1. Remove the front shell of the print head and remove the fan plug.