bad fan pwm j14 ultimaker2 board

[tcconsulting 0]

I would like some advice on how to use the heater 2 as cooling fans ? What do i have to change in the firmware and how

Thanks

[Rm7 1]

I need this badly too, any solutions?

[CarloK 204]

Making this work is not a simple configuration change but requires that you create new program code in Marlin. Are you willing to do that?

People are willing to help you but I doubt someone is going to do all the work for you.

Create a new fork of the UM2Marlin repository on GitHub, make your changes and then we can help by reviewing and giving suggestions.