1)Extruder problem
Please try to push the filament manually and observe whether the print head comes out with filament. If there is silk, it means that the print head is not blocked, it is the problem of the extruder; if there is no silk, it means that the print head is blocked.
¶ 2)Temperature problem
Please try to set the print head temperature to 260℃, and then use a steel needle to clear the print head channel.
¶ 3)Replace the nozzle
Please refer to the video link below to replace the spare nozzle.
Video link: Kobra 2 Series Nozzle Replacement Instructions
If the above steps do not provide assistance or if you encounter any other issues during subsequent use, we recommend that you create a support ticket.
The after-sales engineers will assist you in finding a solution to the problem(Reply time :1 working day)
Please click this link to submit your ticket:
After-sales Ticket Submission Page