Print fan is not spinning
Power down your printer, unplug USB and ensure no power is being supplied to your printer.
Remove the miniRAMBO cover and double check the wiring diagram to ensure the print fan is correctly installed.
Make sure that the fan is:
- Plugged into the right location
- Plugged in with the proper connector orientation
- Plugged in completely and making good electric contact
You can easily test the print fan function from the LCD menu Settings - Temperature - Fan speed. Always test with at-least 50% power, when you select the speed confirm by pressing the selector.
If the fan doesn't spin up, you can unplug it from the electronics board and test it with the 12V DC power source. If the fan spin up with external power source, check all the fuses in RAMBo board.
If the fan does spin up, then make sure that you have your Slic3r settings set up properly. These are our PLA settings.
When the print fan actually should spin up
Print fan is never used during the first layer of any material. From second layer up, it depends on the material profile selected in the slicing software. For example with PLA, print fan is running at 100% all the time until the print finishes. For ABS, the fan is turned off by default in our print settings.
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