Sent the log to Bitmain, They told me to send the whole thing back.......they won't tell me what exactly is wrong with the machine. They just said its defective.
And this is why Bitmain sucks. They will not send or sell individual parts for S series, T series, Z11 and R4 and make you send them the entire unit back even if you diagnose the problem yourself. I had a middle board on a Z11 fry after two weeks with stock firmware and it was well below max operating temps. Not covered by warranty due to hash board burnt. Refused to sell me a replacement unless I shipped the entire unit back.