ReadyNAS 312 ERROR System: Fan fan2 in enclosure Internal speed is below threshold

As a followup, here's some of the log data. My suspicion is this is related to the antivirus, which I have disabled. for the time being. That seems to be the only thing that has changed over the past month or so with the OS update to 6.6.1 Wed Jan 25 2017 9:08:16 System: ReadyNASOS background service started. Wed Jan 25 2017 9:08:14 System: External storage device connected. Wed Jan 25 2017 9:07:04 System: The system is rebooting. Wed Jan 25 2017 9:04:15 System: Antivirus scanner definition file was updated to 57.22948. Wed Jan 25 2017 9:04:14 System: ReadyNASOS background service started. Wed Jan 25 2017 9:04:12 System: External storage device connected. Wed Jan 25 2017 9:03:00 System: The system is rebooting. Wed Jan 25 2017 8:58:49 System: Fan fan2 in enclosure Internal speed is below threshold. (0 rpm). Wed Jan 25 2017 8:58:11 System: ReadyNASOS background service started. Wed Jan 25 2017 8:58:04 System: External storage device connected. Wed Jan 25 2017 8:58:01 System: ReadyNASOS service or process was restarted. Wed Jan 25 2017 6:02:09 System: Antivirus scanner definition file was updated to 57.22947. Wed Jan 25 2017 6:01:03 System: ReadyNASOS background service started. Wed Jan 25 2017 6:01:02 System: External storage device connected. Tue Jan 24 2017 21:00:06 System: The system is shutting down. Tue Jan 24 2017 9:02:45 System: Antivirus scanner definition file was updated to 57.22942. Tue Jan 24 2017 9:02:43 System: ReadyNASOS background service started. Tue Jan 24 2017 9:02:41 System: External storage device connected. Tue Jan 24 2017 9:02:38 System: ReadyNASOS service or process was restarted. Tue Jan 24 2017 9:00:54 System: The system is shutting down. Tue Jan 24 2017 8:55:42 System: Fan fan2 in enclosure Internal speed is below threshold. (0 rpm). Tue Jan 24 2017 8:54:58 System: ReadyNASOS background service started. Tue Jan 24 2017 8:54:56 System: External storage device connected. Tue Jan 24 2017 8:54:53 System: ReadyNASOS service or process was restarted. Tue Jan 24 2017 8:53:35 System: ReadyNASOS service or process was restarted. Tue Jan 24 2017 8:53:08 System: ReadyNASOS service or process was restarted. Tue Jan 24 2017 6:01:11 System: Antivirus scanner definition file was updated to 57.22941.