So i had problem with my first extruder and got a new one.
On the new extruder, the big fan is “sucking” air instead of “blowing”, I’m pretty sure that this is not the intention right?
You can clearly see that it is turning counterclockwise on the video
The voltage is positive between the red and black wire, so the connection inside the rambo board is fine, and the red lead is connected to the red one between the fan and the board.
I guess i got a Fan with problem now.
What is the best way to fix it? swap the connection inside the rambo? cute the wires and swap them??