Ok after checked multiple times, I found following errors and non-errors
errors:
This Program cannot run Without UAC promote elevated rights, as A result you can't use it with Build In Administrator local account and as well as SYSTEM account of windows.
problem: You can't use it from remote command or remotely control fans from cmd and you can't with Domain admin account from server to Workstation PCs because this programe has no way to tun on without UAC promote Dialogue "yes" "No" box.
non-errors:
This Program work perfectly with UAC promote elevated rights, so you have to login to windows with normal admin account every time and have to run the exe GUI or command line with UAC promote Dialogue "yes" "No" box.
I hope, remove the "UAC promote mandatory" from that DellFanManagement.exe file will be available at next update.
Thanks!