[Hardware Version Socket connect failed: Connection refused]

This one was cleaned on July 10th and has been working OK 'til this afternoon when I noticed it not performing.
I've reset it but it makes no difference, hashing doesn't happen.
Status shows: Hardware Version   Socket      connect failed: Connection refused
Is that supposed to be a clue?

I'm not seeing anything obvious from the log, but I don't know what to look for.
Kernal log is posted at: https://pastebin.com/Mbqy3gvz
I'd be most grateful if someone could point me to a solution.
Thank you.

Want to buy: Qty 8 of Antminer Power Supply APW3++  (1200W) or equivalent.

Shipping to:  98844 WA USA or  V0H1T1 BC Canada

PM here or Telegram @ftcnet

Looking for Qty 1 of Pangolin Whatsminer M3 hash board.  I see an AliExpress seller offering them for $420. ea, but new M3X's are only $850.  We're in BC, Canada.

[Qarnot]

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Better tech details at: https://techcrunch.com/2018/03/08/qarnot-unveils-a-cryptocurrency-heater-for-your-home/