Any idea why this antminer was showing three fans?
Here is what it looked like:
Checking fans!get fan[2] speed=6120
get fan[2] speed=6120
get fan[2] speed=6120
get fan[2] speed=6120
get fan[4] speed=1800
get fan[2] speed=6120
get fan[4] speed=1800
get fan[2] speed=6120
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6120
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6120
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6120
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6120
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6120
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
get fan[2] speed=6240
get fan[4] speed=1800
get fan[5] speed=1800
Fatal Error: some Fan lost or Fan speed low!
I thought this was rather amusing. I double-checked the miner to make sure it only had two fans, and that they were running at full speeds. A firmware downgrade to April 2017 seemed to bypass the issue. Thoughts?
EDIT: The April firmware did not fix the issue, it still lost the fan. The only solution was replacing the bad fan.