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Author Topic: Replacement s9 fan  (Read 89 times)
Coltcaine
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April 04, 2018, 12:54:56 AM
 #1

I ordered a replacement fan from a link a guy on here gave me. Fan 3 is at 4,680 fan 5 is at 6,805 the temps are staying at 80c and below been running for an hour. Which is the exhaust fan and which is the intake and does  this seem legit and safe? 
Delta QFR1212GHE Fan 12 Volt 2.7 Amp 12038 120mm*120mm*38mm 4pin https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F162854214490

That is the fan he sent me to get
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April 04, 2018, 01:09:55 AM
 #2

The fan type seems good and the temps are decent. IIRC the intake is the slower fan and the faster fan should be the exhaust on S9s. Things look good temperature wise, I'd continue monitoring things for a bit more before leaving the S9 on its own again. I do notice fan 5's at more than 6000 and that seems abnormal for S9s though I don't work with them often- 6000RPM should be the max for QFR1212 fans.

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Coltcaine
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April 04, 2018, 01:14:16 AM
 #3


http://imgur.com/nw79wVyl.png


heres my miner status.
Coltcaine
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April 04, 2018, 01:27:28 AM
 #4

its now at temps 85 84 84
fan speeds 3,960 and 6,120
my other miners both fans run at around 5600 rpms and temps stay around 76 should i power it down and order another fan from elsewhere or am i being overly cautious?
leowonderful
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April 04, 2018, 01:34:01 AM
 #5

its now at temps 85 84 84
fan speeds 3,960 and 6,120
my other miners both fans run at around 5600 rpms and temps stay around 76 should i power it down and order another fan from elsewhere or am i being overly cautious?
What temperature was your machine running at previously before swapping the fan out? It could be a heatsink related issue or you might potentially have a faulty fan. The fan speed's definitely weird on both fans, I would let it run for a bit more and if it hits 90 pull the miner. There's something off here but I can't quite pinpoint it.

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suchmoon
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April 04, 2018, 01:38:36 AM
 #6

I ordered a replacement fan from a link a guy on here gave me. Fan 3 is at 4,680 fan 5 is at 6,805 the temps are staying at 80c and below been running for an hour. Which is the exhaust fan and which is the intake and does  this seem legit and safe?  
Delta QFR1212GHE Fan 12 Volt 2.7 Amp 12038 120mm*120mm*38mm 4pin https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F162854214490

That is the fan he sent me to get

Why did you replace the fan? Fan failure due to age and/or dust could mean your heatsinks are clogged as well.

Edit: what's the ambient temperature? Your temps don't seem too bad compared to some of my miners but I have like 25C ambient so YMMV.

Coltcaine
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April 04, 2018, 01:40:37 AM
 #7

fan failure due to bearing its a brand new s9 before i was averaging 76 c temps
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April 04, 2018, 01:51:48 AM
 #8

fan failure due to bearing its a brand new s9 before i was averaging 76 c temps

You can try swapping the fans with another miner to see if that really makes the difference. Make sure there are no obstructions to airflow or anything else that could affect it.

Coltcaine
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April 04, 2018, 01:54:46 AM
 #9

ive swapped fans but what im seeing is the lack of rpms and the temps it ran cooler with the other fans i have ordered a replacement from bitmain. but what im wondering is it safe to run it till the replacement arrives or shelf it until then?
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April 04, 2018, 02:03:55 AM
 #10

ive swapped fans but what im seeing is the lack of rpms and the temps it ran cooler with the other fans i have ordered a replacement from bitmain. but what im wondering is it safe to run it till the replacement arrives or shelf it until then?

If it was my miner I would run it as long as it's below 100. I don't know what's "safe". Firmware cutoff is like 120 or more.

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April 04, 2018, 02:05:14 AM
 #11

hasnt bugged from 85 ill monitor it.
Coltcaine
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April 04, 2018, 02:13:02 AM
 #12

put the airmover i had in my garage right behind dropped the temps to 80 should be good... thanks for the input
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April 04, 2018, 02:18:52 AM
 #13

i do have a couple antminer s7's laying around would i better off taking a fan off one of them.
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April 04, 2018, 03:11:12 AM
 #14

i do have a couple antminer s7's laying around would i better off taking a fan off one of them.

Yes, worth a try.

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