Extruder Fan is Alway On!

[jhoarty]

I cannot get my extruder fan to stop running all the time. Even if I set auto cool in the software, or change the speed on the LCD screen, nothing happens. It runs at the same speed all the time. Ideas?

[zhangxueyou]

Sorry, there is no any controlling compoment on fans's circuit, so you can 't control its speed. You can only let them on or off. But we are considering improve it.

[jhoarty]

OK, thanks for that answer. However, the only way to turn it on or off is to plug it in or unplug it? Even on/off is not controllable from the software or LCD menu. Is this correct?

[zhangxueyou]

Yes you are right. But its power is only 1.32W. So I think it's not necessary to do that when not printing. Oh, there is one thing I have to tell you, you must have the fan on when printing or the printing will be effected .

[Tizzy]

Yes you are right. But its power is only 1.32W. So I think it's not necessary to do that when not printing. Oh, there is one thing I have to tell you, you must have the fan on when printing or the printing will be effected .

Is it not more desirable to point the fan at the build rather than the back of the stepper motors?