While the control is powered down would the fans keep running? Under normal circumstances, no they would not be. However you could keep the fans running by powering off, and unplugging cable between brain and blue psu, and power back on. This will ...
This can be caused by your control's "Release version" being older than your modules firmware. To solve this: Do not downgrade modules. Ensure current release version update file is on the PHASON USB ready to be installed. Then install these updates ...