How To turn off my Fans in S9K Antminer

[meysam.yy]

Hello There, Thanks in advance for your time.

I have three Antminer S9K and I want to turn off my fans or get a firmware to control my fans, Because I need to turn off their default fans and use a better fan for overclocking my Antminers, Also the fans I bought is much bigger with less noise, I Search a lot at the internet and nothing found for Antminer S9k, I need a firmware to turn off my default fans or any guide to do it manually but as I think it's not easy to edit the miners code via SSH.

Thanks.

[NotFuzzyWarm]

Do be aware that 'low noise' usually also means that they are NOT rated for delivering high pressure. That mass of tiny heatsinks in a s9 presents a lot of resistance to airflow so the fan must be rated for high static pressure to overcome that resistance.

Also - not a good idea to bypass monitoring the fans. If they fail you can fry the miner...

[mikeywith]

If your new fans can do 5k RPMs then just plug them in and the miner will be happy, not sure what do you want to "disable" the fans all together unless you were trying to liquid cool them, in that case you will need fan simulator found cheap on Amazon.

If you just want to lower the fan speed and put a static/fixed RPMs, I wrote a topic on how to do it, it's easy and straight forward.

There is no known and trusted custom firmware for the S9k, but thierry4wd unlocked the stock firmware, if you have the programming skills needed, you could probably disable the fan-check function.