One of our APC 910 has a fault code not listed in the manual. Both the power LED and run LED are rapidly flashing red and green. Already tried new cfast card and unplugging any other devices. Any help would be appreciated.
connect display, unplug CFast card and power on your APC. It should be possible to boot to EFI shell or BIOS. If not, then very likely it is hw issue → repair department