Front pannel LED - Blue (slowly) blinking_OneFS v8.0.0.3

Does anybody know what "flont pannel LED - Blue slowly blinking" status indicates?

It starts happening just after taking Isilon's front pannel off. Even after putting the pannel back, the blue blinking state does not change.

OneFS version is 8.0.0.3 and it happens at least on 210 and X410.

In addition to that, please let us know how to stop the blue blinking status (if you know the way). We know rebooting the node fixes the issue (makes the light back to solid blue), but we'd like to another easier way to fix the LED status.

FYI: "isi event" command does not show any event when the LED start blinking.

Thank you!