Spent some time today checking temps on my miners (easily done with Awesome Miner by just sorting on the Status tab). Anyhow, out of ~120 S9s I found 5 that were running hotter than the others. Most had reported chip temps in the 60s-70s. These 5 were 80+.
My first step was to do what I thought was the obvious thing: tear them down and blow them out. That actually helped 3 of them. The other 2 continued to run warmer than expected.
Opened up the web gui on each and discovered both had one fan only running around 2000-2600 RPM. Swapped the fans out (with spares I had previously purchased from Bitmain), and goodness returned.
Learning for today: Just because it boots and passes the BIOS fan test, doesn't mean those fans are running correctly!
Oh, for the record: I started down this journey today because Awesome Miner alerted me that one of the miners hit 96C. Nice to be notified. Not good that a miner was running at that temp. I should also note the intake air temp is 90F (32C) right now.
Topic: S9s running warm? (Read 128 times)
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