This is the real problem:
no power in the OA module or the Insight display in front
If the OA is not active, the fans do not know what speed to run, so they report flashing amber and run at full speed. I bet the enclosure is really loud?
So, the problem is with the OA, likely the module itself. As this was a new install, disconnect power and fully reseat the entire OA tray and then each module. You might as well reseat each device bay and interconnect module as well.
If still a problem, then you may have a faulty OA module, OA tray or some connection issue.
Good luck!
-Bob