Author

Topic: S9 fan overspeed indication (30600 rpm!) (Read 525 times)

legendary
Activity: 3892
Merit: 4331
October 26, 2017, 08:54:15 PM
#7
No firmware changes have ever fixed this. It is something I have dealt with on these s9s since the beginning. As it doesnt affect mining in any way that I have ever noticed I just chalked it up to bitmains laziness in that they dont care to patch it.

Thanks, it means that I should not bother upgrading the system.
You are probably located in a colder climate because in my case (higher ambient), PCB temp goes to 79-80C and one board drops from time to time.
hero member
Activity: 756
Merit: 560
October 25, 2017, 12:53:00 PM
#6
No firmware changes have ever fixed this. It is something I have dealt with on these s9s since the beginning. As it doesnt affect mining in any way that I have ever noticed I just chalked it up to bitmains laziness in that they dont care to patch it.
legendary
Activity: 3892
Merit: 4331
October 24, 2017, 11:17:20 PM
#5
@fanatic26: wow, high % as 8/30=~27%.

So, it is un-fixable?

Even soft update does not help or you did not bother?
hero member
Activity: 756
Merit: 560
October 24, 2017, 01:23:45 PM
#4
Just to give you an idea of how common that bug is here is a screenshot of 30 miners with 8 of them showing the bug.

legendary
Activity: 3892
Merit: 4331
October 23, 2017, 08:21:58 AM
#3
It's a known bug. Not sure what can done about it unless you aren't running the latest firmware, but updating firmware is its own thing... Roll Eyes

Thanks.

I did not update the software because it is such a nuisance. So far it never helped with anything.
Right now this S9 (early autotuning batch) restarts in just 5-6 min.
If this is the only thing that helps, I might do it, reluctantly.
hero member
Activity: 1610
Merit: 538
I'm in BTC XTC
October 22, 2017, 09:36:48 PM
#2
It's a known bug. Not sure what can done about it unless you aren't running the latest firmware, but updating firmware is its own thing... Roll Eyes
legendary
Activity: 3892
Merit: 4331
October 22, 2017, 08:12:26 PM
#1
Had anyone had a situation where one fan shows 30600 rpm?
I have one S9 that does it, consequently second fan under-spins at 2280 rpm; PCBs are a bit hot and miner periodically loses a board (randomly).
The board comes back upon soft or hard restart, but fan speed keeps at 30600.

Q:
1. did it happen to you?
2. if it did, can anything help the situation?

I am reluctant to sent this S9 for repair because apart from showing high fan speed, miner works OK, until it drops a board, that is.
However, since restart brings it back, it is not that big of a deal.
please, let me know.
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