Avalon 6 Derping at 30C ambiant? -> Evap Cooling

[VirosaGITS]

So the days started to get a bit hotter and i noticed my Avalons derping horribly. They start and mine, then dont spin up the fan much, then when temp reach over 75C, the fan go 100% for a few minutes and stop hashing. Then do it over and over again.

https://i.imgur.com/qYA2R4s.png?1

You can see here the first one finish its cool down period and start hashing again, just by the time the second one stop mining and put fans full blast + stop hashing.

https://i.imgur.com/UjW6GQ6.png?1

The issue is rather intermittent, but only seem to happen when the ambiant is a bit hot. (30C @ intake)

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[alh]

As I read your temp value, there are 3 values in a row: 43 47 50

As I understand it, the 1st of those three values is the temperature of the Controller (not the Pi) within the A6. When that exceeds 40C things get squirlly and it's usually on it's way to shutting down. That seem consistent with your observed behavior. You need to make sure the controller stays cool. Possible options:

1) Supply cooler air to the A6 intake (end with the PCIe power cables).

2) Some folks have considered laying the A6 on one side, possibly upside down.The controller is at the top.

3) Any obvious obstructions at either end for the fan?

4) Are you running either the Delta or  Sanyo Ace fan?

5) Are you pushing the input 12V to get a better hash rate?

The short summary is that the controller is TOO HOT (I think).

[HerbPean]

My ambient temps is always between 28-33 and I never had one issue with my AV6 BUT my first temperature never go over 41, currently at 39.

[VirosaGITS]

As I read your temp value, there are 3 values in a row: 43 47 50

As I understand it, the 1st of those three values is the temperature of the Controller (not the Pi) within the A6. When that exceeds 40C things get squirlly and it's usually on it's way to shutting down. That seem consistent with your observed behavior. You need to make sure the controller stays cool. Possible options:

1) Supply cooler air to the A6 intake (end with the PCIe power cables).

2) Some folks have considered laying the A6 on one side, possibly upside down.The controller is at the top.

3) Any obvious obstructions at either end for the fan?

4) Are you running either the Delta or  Sanyo Ace fan?

5) Are you pushing the input 12V to get a better hash rate?

The short summary is that the controller is TOO HOT (I think).

1) Can't, running A/C is not doable so i use outdoor air

2) Thats worth a try but it work just fine if i set the fan speed so that temp never reach 76C in the first place, so the controller protection preventing fan speed to raise seem kind of a bug, if thats it.

3) No they are being cooled fine and work fine (if the fan are set manually), its the automatic fan speed that is going haywire.

4) Stock, i think its Deltas

5) No its ATX PSU and they are underclocked to keep RPM at 3k (noise), if i set minimum fan speed over 3k they hash fine without the issue, but if its for example 2.8K when they reach 76C after a while, they shut down and go 100% fan speed, instead of raising the fan speed.

My ambient temps is always between 28-33 and I never had one issue with my AV6 BUT my first temperature never go over 41, currently at 39.

I dont know why the controller isint getting air or why it would prevent fans from spinning up, though.

[philipma1957]

the controller auto resets at 45C


that gear needs  a fast fan setting.  Since your first number is too hot

try 60 or 75 for the fan

this should keep the controller at a cooler temp.




Never never never never use auto fan settings.

[HerbPean]

the controller auto resets at 45C


that gear needs  a fast fan setting.  Since your first number is too hot

try 60 or 75 for the fan

this should keep the controller at a cooler temp.

Yeah mines never ramps up to full speed but they do ramp up rarely when it's very hot (not enough air flow).

I set my fans at 40% min.

[VirosaGITS]

the controller auto resets at 45C


that gear needs  a fast fan setting.  Since your first number is too hot

try 60 or 75 for the fan

this should keep the controller at a cooler temp.




Never never never never use auto fan settings.

Auto fan speeds are fine, the cutoff work well. You're even the one that recommended my settings a while back. Anyways.

The problem is the controller, which isint being cooled much, 2k or 5k RPM, it still overheat.

This is really annoying. And no one seem interested in buying these even though they have been available to buy for many weeks.

the controller auto resets at 45C


that gear needs  a fast fan setting.  Since your first number is too hot

try 60 or 75 for the fan

this should keep the controller at a cooler temp.

Yeah mines never ramps up to full speed but they do ramp up rarely when it's very hot (not enough air flow).

I set my fans at 40% min.

Seem the intake is just too high, there's no way for me to keep the controller under 45C on hot days.

[alh]

A couple of items to consider:

I am pretty sure that controller temp is NOT used in figuring out what speed to set the fan. I think it strictly the temperature of the hashing boards. Is this a Bug (maybe)? I think the 45C is strictly a protection limit to prevent damage to the controller. I wonder if perhaps the fan were drawing too much current that would heat up the controller?

I also don't know how the controller gets any airflow. Phil has cracked open an A6 and might be able to comment on the layout. If your miner warranty has expired, you might consider find a way to better cool the controller. If you were willing to open the case, maybe a small, quiet fan directed at the controller would help. We've all heard the "don't exceed 45C on the controller" warning. How hot is it ambient and how much difference do you have between ambient and 45C?

What are the "Max Frequency" value and the "Minimum Fan" values (using the cgminer config tab)? My experience with "Max Frequency" is that it really isn't a maximum at all, or the unit of measure is off. I've tried a a value of 250 as well as 500, and after a few hours of running, the hash rate is virtually the same.

Is there any airflow around the outside of the case? I ask since I think the case temperature might have a big impact on the controller temp. Just speculating here.

Just a couple of random ideas to consider.

[philipma1957]

the controller auto resets at 45C


that gear needs  a fast fan setting.  Since your first number is too hot

try 60 or 75 for the fan

this should keep the controller at a cooler temp.




Never never never never use auto fan settings.

Auto fan speeds are fine, the cutoff work well. You're even the one that recommended my settings a while back. Anyways.

The problem is the controller, which isint being cooled much, 2k or 5k RPM, it still overheat.

This is really annoying. And no one seem interested in buying these even though they have been available to buy for many weeks.

the controller auto resets at 45C


that gear needs  a fast fan setting.  Since your first number is too hot

try 60 or 75 for the fan

this should keep the controller at a cooler temp.

Yeah mines never ramps up to full speed but they do ramp up rarely when it's very hot (not enough air flow).

I set my fans at 40% min.

Seem the intake is just too high, there's no way for me to keep the controller under 45C on hot days.

my garage is 87f  and they run fine

But lets check and see if I have temps wrong.

my fans are set at 50.  my controllers are cool well under forty.

[VirosaGITS]

A couple of items to consider:

I am pretty sure that controller temp is NOT used in figuring out what speed to set the fan. I think it strictly the temperature of the hashing boards. Is this a Bug (maybe)? I think the 45C is strictly a protection limit to prevent damage to the controller. I wonder if perhaps the fan were drawing too much current that would heat up the controller?

I also don't know how the controller gets any airflow. Phil has cracked open an A6 and might be able to comment on the layout. If your miner warranty has expired, you might consider find a way to better cool the controller. If you were willing to open the case, maybe a small, quiet fan directed at the controller would help. We've all heard the "don't exceed 45C on the controller" warning. How hot is it ambient and how much difference do you have between ambient and 45C?

What are the "Max Frequency" value and the "Minimum Fan" values (using the cgminer config tab)? My experience with "Max Frequency" is that it really isn't a maximum at all, or the unit of measure is off. I've tried a a value of 250 as well as 500, and after a few hours of running, the hash rate is virtually the same.

Is there any airflow around the outside of the case? I ask since I think the case temperature might have a big impact on the controller temp. Just speculating here.

Just a couple of random ideas to consider.

Its clear its the controller stopping its job when it reach 45C and when the blades reach 76C it goes into full cooldown mode.

Thanks for the tips, i said what i said but whats really going on is, i'm in the process of moving to a new appartement and thus my setup for cooling these is not available.

The max freq really work for me, for instance if i set 100mhz the unit run almost fanless (@1.5TH/s for 2 A6), but the ambiant is over 30C and the intake seem to be 36C so inside the machine must be 40C, not much room for the controller.

I need to sell these, or buy an A/C.

[adaseb]

Yeah this week in Canada has a huge heat wave, pretty much had to shut down all my miners, just left the GPUs running since they are more profitable.

And A/C doesn't work either, maybe I need 2 of them running. But having the box fan at 100% seems to keep everything cool enough. But 30C ambient is not pleasant.

[philipma1957]

he could rotate the avalon 6  turn it upside down  the controller is where you plug in the four pin jack that goes to the

 rasp pi.

30 c = 82 f

the controller should not have an issue in a  82 f room.


https://i.imgur.com/p49AKoL.jpg

https://i.imgur.com/iLTYrRy.jpg

https://i.imgur.com/btbyebd.jpg

https://i.imgur.com/5zi5S7V.jpg

https://i.imgur.com/7Si9dFf.jpg


https://i.imgur.com/MwJRCpq.jpg


https://i.imgur.com/AyRau7e.jpg


so my temp in my garage is 89

I moved temp on top of miner it is 86

so my fans are on 50
my  volts are 11.9
my controllers are  33 to 37 c

your  volts are 12.1

your controllers are hotter due to the 12.1 volt reading

simply lower volts and set fans to 50 or 65

[dogie]

Set a higher minimum fan speed to prevent it dropping low. They change fan speed quite often which is annoying so if you can set the minimum very near its normal rpm then the speed will be much flatter.

[VirosaGITS]

Yeah this week in Canada has a huge heat wave, pretty much had to shut down all my miners, just left the GPUs running since they are more profitable.

And A/C doesn't work either, maybe I need 2 of them running. But having the box fan at 100% seems to keep everything cool enough. But 30C ambient is not pleasant.

Indeed, the intake gets really high, when the air in the room is already at 30C.

Set a higher minimum fan speed to prevent it dropping low. They change fan speed quite often which is annoying so if you can set the minimum very near its normal rpm then the speed will be much flatter.

They stabilize but the issue here is the controller get to 45C and the A6 stop mining.

he could rotate the avalon 6  turn it upside down  the controller is where you plug in the four pin jack that goes to the

 rasp pi.

30 c = 82 f

the controller should not have an issue in a  82 f room.


https://i.imgur.com/p49AKoL.jpg

https://i.imgur.com/iLTYrRy.jpg

https://i.imgur.com/btbyebd.jpg

https://i.imgur.com/5zi5S7V.jpg

https://i.imgur.com/7Si9dFf.jpg


https://i.imgur.com/MwJRCpq.jpg


https://i.imgur.com/AyRau7e.jpg


so my temp in my garage is 89

I moved temp on top of miner it is 86

so my fans are on 50
my  volts are 11.9
my controllers are  33 to 37 c

your  volts are 12.1

your controllers are hotter due to the 12.1 volt reading

simply lower volts and set fans to 50 or 65

I did turn them upside down, no difference. (As in they still reach 45C)

My Volts in are flat 12V and cannot be changed. The reading on the UI is completely derped, when underclocked the reading goes up to 12.4V, which may be the voltage inside the units but my EVGA are still feeding 12V.

The intake is much higher than 30C. 30C is the room temperature.

I just turned them off.

[adaseb]

Can't you just take off the cover and point a fan directly on that controller.

[VirosaGITS]

Can't you just take off the cover and point a fan directly on that controller.

lol, Funny idea. I'm not sure how the air flow would be without the enclosure. Anyhow to do this i'd have to remove them from the box, which would mean the hot air would be dumped inside instead of outside and we'd be back to square one. But i'll have to keep that one in mind after i'm done moving...

...or i'll just sell them, its getting pointless to run them at half speed to keep them quiet.

[adaseb]

Can't you just take off the cover and point a fan directly on that controller.

lol, Funny idea. I'm not sure how the air flow would be without the enclosure. Anyhow to do this i'd have to remove them from the box, which would mean the hot air would be dumped inside instead of outside and we'd be back to square one. But i'll have to keep that one in mind after i'm done moving...

...or i'll just sell them, its getting pointless to run them at half speed to keep them quiet.

How loud are they compared to an S3? I assumed they were very quiet miners according to the Youtube videos.

[philipma1957]

Can't you just take off the cover and point a fan directly on that controller.

lol, Funny idea. I'm not sure how the air flow would be without the enclosure. Anyhow to do this i'd have to remove them from the box, which would mean the hot air would be dumped inside instead of outside and we'd be back to square one. But i'll have to keep that one in mind after i'm done moving...

...or i'll just sell them, its getting pointless to run them at half speed to keep them quiet.

How loud are they compared to an S3? I assumed they were very quiet miners according to the Youtube videos.

the older ones with the delta fan are not as loud as a stock s-3.

the newer ones with the black no name fan are loud.  I gave away sanyo ace fans with the last group buy to keep sound better.

they are decent gear all in all but not quite as nice as the 4.1 gear was.

[VirosaGITS]

Can't you just take off the cover and point a fan directly on that controller.

lol, Funny idea. I'm not sure how the air flow would be without the enclosure. Anyhow to do this i'd have to remove them from the box, which would mean the hot air would be dumped inside instead of outside and we'd be back to square one. But i'll have to keep that one in mind after i'm done moving...

...or i'll just sell them, its getting pointless to run them at half speed to keep them quiet.

How loud are they compared to an S3? I assumed they were very quiet miners according to the Youtube videos.

At full speed, like 4.5-5k RPM its pretty much the same as a S7. The fan is less whiny, though, so its louder but not nearly as high pitch. But during the winter, the RPM was at 2k or less and they were nearly silent in my sound proof box.

My S3 is silent, i put 18dB 120mm PC fans and its running overclocked fine, temps 55-65C atm (because its hot).

The A6 is louder than a S3 all across the board, though. I would not mind trying Sanyo fans.

[MarkAz]

If you're so inclined, one thing I had considered doing when I was playing around with high temp issues was drilling a couple holes on the front right above the controller (probably wouldn't take too many, maybe 4 right across the front).  I think the problem has more to do with the hot air getting trapped in the area where the controller is, and just putting a bit of venting there would be enough to make sure it gets evac'd.  If you do consider doing it, make sure to fully disassemble it (pretty simple) so you don't get any metal filings on any of the PCB's.