if I followed the A,B & C correctly, they are normal.
A = on any time AC is applied
B = on when booted
C = on only when an issue has occurred (check sel logs) valid after ~ 60 seconds
D = pretty blue light to help you find the server in a room full of servers.
The FRU error can be caused by the BMC not being ready.
If you just did a large jump in the code levels might be one possibility
The next attempt passing makes this seem most likly or if you did a AC cycle to reset the BMC.