It started with a new roll of filament.
Loading the filament was normal.
In first instance the printing was also OK, but after half hour the printer moved without printing.
I have tried to unload the filament but it was not possible.
After dismounting the extruder it showed that the filament was thicker and stuck in the PTFE tube.
The filament can print with 190 to 220 Celsius and I was printing on 200 Celsius.
Now with other older filaments happens the same.
Now the hotend burned.
I found the problem, but I don’t know how to solve it.
The 2 fans are not blowing, and therefor not cooling