I don't know if this is hardware related or more to software, but I know frodocooper will handle this in no time  

so the old school trick that works on S9,S9j and S9i does not work on the K/E version as well as all the new models such as S17pro/+ T17/e, I have no idea why does Bitmain continue to try and limit users on what they can do with their miners, but well, everything is done for a reason, which in this case, does not really matter.

so just to recap, in all other S9 models all you had to do is right-click on the miner setting page, hit inspect you get this.



you go to the line where it says fan_ctrl and delete that "none" part, then you hit enter and the fan settings appear on the web page.

well sadly this does not work anymore on the K version, and here is what happens when you do the same thing.



Nothing!

what Bitmain did was put all of these "perks" under one class/set and disable all of it, so it's like every child will inherit the default setting in the parent class header, which is this one


so after you delete the "none" part from the fan_ctrl , you need to delete it from the class line too, like so



and bingo!! your fan control is enabled.