Thanks for the feedback. I tried that but it didn't work. Here is a list of everything I have done so far.
502 fault.
2415 anomaly.

[ ] Disconnected 3 phase to drive and tested.
[ ] Disconnected all plugs except J12 and 24VDC and tested.
[ ] Swapped PCBM mainboard.
[ ] Swapped CPU battery and ensured switch was on.
[ ] Swapped phases around.
[ ] Restored CPU parameters to factory default. Re-entered parameters and tested.
[ ] Swapped PIC parameter around. (Tried both F60 and F50).
[ ] Tested incoming voltage on J12. OK.
[ ] Put on Assembly mode and back to normal.