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.
Please try to set the print head temperature to 260℃, and then use a steel needle to clear the print head channel.
Please refer to the video link below to replace the spare nozzle.
If you have further questions, we suggest you create an after-sales ticket and our After-sales engineers will help you solve the problem. (Reply time :1 working day)
Please click this link to submit your ticket: