Simplify3D User Forum

I recently got a new FlashForge Creator Pro, and it has a blower attached to the carriage to cool the extruder nozzle ends. However, I'm noticing that it never actually turns on for any of my prints. Is there a setting that I am missing somewhere to control this?

Well, do you have fan speed settings on the cooling tab? For example, enter a fan speed of 100% at layer 1 and then see if there is a M126 command in your gcode file