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Topic: HELP - My first Antminer S9 is reaching 81F ?????? (Read 526 times)

full member
Activity: 279
Merit: 107
The autotune frequency setting is chip quality dependant and for cooling there is an automatic fan control.

105 C is the high limit, below that and you're fine.

Thank for the info, got another two on the way and need to find a way to 'rack' them. metal shelve them ?

I just have the Bitmain PSU alongside the miner and the cables are TIGHT !

Cheers Hag
legendary
Activity: 2464
Merit: 1710
Electrical engineer. Mining since 2014.
The autotune frequency setting is chip quality dependant and for cooling there is an automatic fan control.

105 C is the high limit, below that and you're fine.
full member
Activity: 279
Merit: 107
Those are ok values and the unit is CELSIUS, NOT FAHRENHEIT.  81 Fahrenheit would be pretty cold temperature value for a miner, don't you think?  Wink

Wow, i presumed F as the temps were so high, i presume since they control their own freq then it would slow down at a certain temp, or be a variable frequency ?
legendary
Activity: 2464
Merit: 1710
Electrical engineer. Mining since 2014.
Those are ok values and the unit is CELSIUS, NOT FAHRENHEIT.  81 Fahrenheit would be pretty cold temperature value for a miner, don't you think?  Wink
full member
Activity: 279
Merit: 107
Hi

Just had a new S9 from latest batch and the temps range from 59 -81f !!

There is no way to adjust frequency, the temps on chain 2 are 71,74,81f

Is this OK, it's in a cold garage, plently of ventilation ?

Cheers
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