¶ 1. Note:
Check the print head heating harness, it needs to be powered off and the hot end temperature should be below 35 degrees.
¶ 2.Tools：
S2.5 Allen key*1
¶ 3.Solution:
¶ Check the print head heater harness
1.Remove the air duct cover.
2.Remove the extruder motor wiring harness.
3.Use an S2.5 hexagonal wrench to unscrew the housing fixing screws and remove the print head housing.
4.Check whether the print head wiring harness is loose.
5.After the print head harness inspection is completed, set the print head temperature to 210 degrees and test for 10 minutes. If there is no error again, you can print.