S9 Miner Troubleshooting - Fan surge to 100% and Temapture readings stop \ stacker news ~bitcoin

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S9 Miner Troubleshooting - Fan surge to 100% and Temapture readings stop

36 sats \ 6 comments \ @Wumbo 18 Mar 2024 bitcoin freebie

I have recently decided to go down the ASIC rabbit hole with a S9 miner but I am running into a weird scenario. Hopefully the SN community can help.

Current setup:

Braiins OS+
1 board plugged in
Performance set to ~200 watts
Target temp 89 C

Miner will run great for a few hours. Fans RPM sits around 3%. At the "Low" power level unit is quiet and perfect to set on top of a desk.

The Problem: After awhile the Fan RPM will jump up to 100% for 30 seconds and then settle back down. If I look at the Temperature graph when this happens there is no data. The dark mode setting for the web interface to Braiins OS gets set back to light mode.

I hoping to have this miner to sit in an office but the 100% fan is to loud and distracting.

I have tried the other 2 boards and experience the same situation.

Once it starts having this issue it seems to keep happening ever ~10 minutes.

One hypothesis I have: The unit doesn't always get up to the target temperature because of the low wattage. Is there a minimum temperature need to run the miner?

All thoughts and advice is greatly appreciated. @AlexKaboomracks

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12 sats \ 3 replies \ @KaboomracksAlex 18 Mar 2024

Braiins takes a while to tune. If ambient temps change, it may either start retuning or change tuning profiles, hence what appears to be a restart.

There are Noctua fans you can buy for way too much on Amazon which are significantly quieter.

15 sats \ 0 replies \ @Wumbo OP 18 Mar 2024

Thanks for the expert advice.

I think I will set the Target temperature lower and see if that keeps it from changing the tune.

I agree the Noctua fans are quieter but the stock fans are good enough for me if they stay under 10%.

0 sats \ 1 reply \ @Wumbo OP 18 Mar 2024

How many tuning Iterations should one expect?

I am up to 25 Iterations at the moment

10 sats \ 0 replies \ @KaboomracksAlex 18 Mar 2024

I'd let it run for at least 24 hours before thinking anything of it

2 sats \ 1 reply \ @0xbitcoiner 18 Mar 2024

Once it starts having this issue it seems to keep happening ever ~10 minutes.

Looks like block production is on track :)

32 sats \ 0 replies \ @Wumbo OP 18 Mar 2024

I am mining in a pool. So it doesn't have anything to do with the a block being found.

I knew after I typed 10 minutes I should of said ~20 minutes. To avoid any confusion :)