I would recommend that you restart and reset the iDrac. You will need to turn off the system, remove AC cables, then wait for 5 seconds to connect AC cables back. then turn it on. If that fails to resolve it then you can follow one of these procedures to reset the idrac. Once these are done then wait a couple minutes after supplying power cable to allow the idrac to initialize, then you can power the server.
Let us know how it goes.
If you like also, you can follow and send a private message with your service tag to ensure we have all appropriate information on the system.