I don't see where I specified hot end anyways but here is a screen shot where you can adjust the settings of the AUX fan.
As you see here I have it at two different speeds, one for the first layer and another for the rest. You can make it do more as you see with the settings.
Screenshot (128).jpg



Quote Originally Posted by JensC View Post
You said there are hot end fan speed settings in Simplify3D. This I know. They do not, however, apply to the turbo fan. It's either on or off. The hot end fans run fine making it unlikely to be a PS issue.