# SKR Mini E3 V3 PWM Fan Control
**URL:** http://forum.3dprintbeginner.com/t/skr-mini-e3-v3-pwm-fan-control/80
**Category:** Marlin
**Created:** [February 14, 2022, 8:21pm UTC](http://forum.3dprintbeginner.com/t/skr-mini-e3-v3-pwm-fan-control/80 "2022-02-14T20:21:37Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@smccloud](http://forum.3dprintbeginner.com/u/smccloud)
#### Post date: [February 14, 2022, 8:21pm UTC](http://forum.3dprintbeginner.com/t/skr-mini-e3-v3-pwm-fan-control/80/1 "2022-02-14T20:21:37Z")
I have an SKR Mini E3 V3 on the way to replace my dead SKR E3 DIP board. I do not want the hot end fan to turn off as I am going to be running a HeroMe Gen 6 setup. As I’ve never had the ability to turn this fan off before, what setting am I looking for in Configuration.h/Configuration\_adv.h to disable it?
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### Author:  [@3DPrintBeginner](http://forum.3dprintbeginner.com/u/3DPrintBeginner)
#### Post date: [February 15, 2022, 4:33am UTC](http://forum.3dprintbeginner.com/t/skr-mini-e3-v3-pwm-fan-control/80/2 "2022-02-15T04:33:53Z")
The fan only turns off when the hotend temperature is lower than 50c. You don’t like silence? 😃
Either way, the setting is configured using the `#define EXTRUDER_AUTO_FAN_TEMPERATURE` option. I guess setting the value lower than 50C will keep it on all the time.
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### Author:  [@smccloud](http://forum.3dprintbeginner.com/u/smccloud)
#### Post date: [February 15, 2022, 1:15pm UTC](http://forum.3dprintbeginner.com/t/skr-mini-e3-v3-pwm-fan-control/80/3 "2022-02-15T13:15:04Z")
My printer doesn’t live at home. Plus I doubt I’d hear a difference between it being off due to the stock Ender 3 PSU fan…
But you think 50C would be ok when the hot end is mounted to a PETG mount on the HeroMe Gen6?
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### Author:  [@3DPrintBeginner](http://forum.3dprintbeginner.com/u/3DPrintBeginner)
#### Post date: [February 15, 2022, 1:37pm UTC](http://forum.3dprintbeginner.com/t/skr-mini-e3-v3-pwm-fan-control/80/4 "2022-02-15T13:37:51Z")
It’s fine. This is the temperature at the nozzle level.
The fan will start in less than 10 seconds after starting the heating process.