Yeah, both fans are running fine. I've run them individually with one of the stock fans just to troubleshoot.
But as soon as I hook them both up it fails out.
Discussion
are the fans spinnig continously with the same speed or are they able to get commands from dashboard? I am not experienced though.
Yeah I'd try to hook one oem with one phanteks. Then try to force the wattage up or down. Wait a bit but the fans should adjust rpm. If it is then there is nothing wrong with the physical hardware per se...
I think braiins gives you the option of running without fans... you may want to check that box... though you lose any error protection in that case
Running even with one oem is still bloody loud. I'll give checking the "no fans" box a try and monitor it closely for a bit to make sure it's not going to melt.
Weird new twist.
Now with both new fans connected and running it had decided to stick itself at 615 watts and is keep the temp at about 57c, which would be great, except now its running so cool it's not a very good heater, more of a luke warm fan 🤦.
Ugh. Gonna get there.
Does it maybe have to connect to additional ports? It almost sounds like the fans are just plugged in a power source but not in the control board
I think the PWM wire may be loose or not making proper contact.
Try forcing it to a specific wattage. Configuration > Performance
In the auto tuning section, enable thay and force power target to 800. Save and restart bosminer. Make sure to give it time to tune to "stable". (On your dashboard, tuner status is at the bottom of the page)
After it's stable at 800, check your fan rpms and chip temp. Force it to 1450 watts next and check the fan speeds and chip temp once tuning is stable.
It could be tuning. When I change configs, my miners will sit at around 600ish for a while while its tuning and then ramp up in stages.
Scroll to the very bottom of your dashboard and see the status column. If it is testing, then that's why. It shld say stable when it's done tuning.
Got it running! Thanks so much for the help!
The fix was to turn immersion mode on, which is what "disables" the fans. They still run, but I guess it stops trying to make sure theyare there? And then I tuned to 800w with that setting turned on.
Going to go through and test tuning at different w next to find what setting has the best efficiency under 1200w.
Again, thanks for the help!
Immersion mode is for water based cooling I guess. In that case you do not need fans...
Just be careful because if your fans do fail, the machine won't turn off automatically and your hashboards will overheat
From what I can tell Braiins has temp controls that will shut it down if you pass a certain temp threshhold.
I think the default is 110c?
They seem to be running continuous at a fixed speed.
Check your connections at the post (where u plug into the board). Check the connactor itself and the wires situated within too. It sounds to me like the wire which regulates the fan speed (PWM) may be loose/not making proper contact.
