I had this happen with my miner. What I found out is that the connection between the hash board and the central board was not good. Tightening the cable connections and rebooting the miner fixed it.
I sprayed some electrical contact cleaner on the pins, and it changed things a bit:
Under the "ASIC#" column,
http://192.168.1.xxx/cgi-bin/minerStatus.cgi reports 30, so it's seeing all the ASICs, but in the "ASIC status" column, it displays "------ -------- -------- --------", not "oooooo oooooooo oooooooo oooooooo". The chain is certainly drawing watts (as my watt meter reports about 600W), but it must not be communicating with the central board properly.
The connection is good enough that it knows the temp, etc., but apparently not good enough to transfer more data?
The temp is 5°C higher than the other chain. Maybe I do need to put new thermal paste? I checked it, and it didn't look bad.
