Pierre-Jean,
Per Troubleshooting, Appendix C of the FP-2000/2010/2015 User Manual, linked here: http://www.ni.com/pdf/manuals/370705a.pdf , 2 Status Flashes means that the software of your FP-2000 has become corrupted. There are a number of reasons why the firmware may have become corrupted. The most frequent cause is a power failure occuring when writing to the Compact Flash. You will need to re-install the FP-2000 firmware.
The corrupted firmware is the reason why the FP-AI-100 Ready LEDs are not lighting and why you can not see the IO modules from MAX. Reinstalling the software will allow the module to fully boot at which point it will configure the IO modules, causing the READY LED to be lit. As a side note, the DI-300 series and DO-400 series modules will always light their Ready LEDs when not configured because they do not require any configuration.
Regards,
Aaron
LabVIEW Champion, CLA, CPI