Antminer S1 - the LEDs, what do they indicate?

[Pjones]

I can't seem to make sense of the LEDs on the controller board. Does anyone have a cheat sheet that shows what each led means?

The one I am interesting in is the one right under the rj45 Ethernet connector.  I think most miners will have both of them lit.  Like this:



However, on just one of my S1 miners, only the left one (under the Ethernet connector, furthest away from fan) is lit, the right one is off. 

Any ideas?  It is working fine, just want to understand what it indicates.

Thanks

[leptar]

I believe it's old firmware, that it was 2 led's for the controller board with the December 26th 2013 firmware, but the April 2014 firmware update switched it back to 1 led.

All my ants are running with 1 led on the controller board...

To be honest i flashed 5 of them from the older firmware and never paid attention to the controllers leds because they were working..

[squashpile]

Both with be on when Wifi is turned on from what I can tell.

[Iradium]

The one near to the intake fan is wifi indicator.  If wifi being used, the LED will blink when communicate with a network. This LED light will not lit if Ethernet wire being used instead of wifi connection. The one farther  away from the fan is always on no matter what method Antminer connect to a network.  This might have something to do with firmware as mentioned by someone earlier.

[Pjones]

Okay, maybe my firmware is different.  None of my ants have wifi enabled, yet one of the  only lights a single led.  Oh well, not the end of the world.