Confused about fan issue

3D Printing 3D Printers
1

Hi, I’m new on the board here, but I’ve been using my Wanhao Duplicator i3 Plus for about a year now, and have overcome many…“challenges.” However, this latest has me stumped. The printer fails to extrude after a time, due to the side cooling fan not operating. It had been working, then I had bad PLA which I had to dig out and I accidentally broke several of the blades. It worked for a time after that, then quit. I’ve since replaced that fan with a new one (from Ultimate 3D Printing Store, as the local fan I obtained was the incorrect 24V), but the new fan is not operating at all. Any suggestions?

  • Warren
2

what voltage is this one? You definitely need the fan to keep the top of the extruder tube chilled and prevent jamming from what is called “Heat Creep”. You need a 12V fan to make it work.

3

Yes, the new fan is 12V. I guess I should have said that.

4

Check the polarity - at least when it comes to part cooling fans, I have always had to switch the pins, it appears Wanhao has it backwards, compared to what is considered “standard”.