You could combine your current idea with your first plan. By using flex ducting from your miners up to the intake for your exhaust fan by doing this you will be using your miners fans to assist the exhaust fan to remove the heat, I would use slightly oversized flex ducting to reduce friction. It would require you to maneuver your miners a bit to avoid having any extra bends in the ducting, and this way your fan should be able to exhaust all heat, as it will almost be working like an inline fan and almost all of its intake will be direct from the miners.

Or you can fab up a receiver at the intake of your fan and run rigid ducting from the miners directly up to it. This closed system would work as the rigid ducting won't collapse from the fans suction, and all of the air it pushes out will be direct from the miners themselves.

You could do this with a few sheets of duct material some tape. The bitch would be cutting in the holes for the Miner exhaust ducts to join in. Here's an idea of the duct material to build the receiver box at the fan intake.

https://www.homedepot.ca/en/home/p.8x16x60-inch-main-duct-28ga.1000407246.html

Can you post a screen cap of the miner log. It will give a much more accurate look at how everything is working including the hash boards.
Have you checked to see that your voltage offset is 0?

You have a ton of options.
First thing I  would look into is talking to your utility company about the second 200 amp service coming Into your residence as they will tell you exactly what needs to be done per your local code. Using that info you can get a way better estimate from an electrician. I would personally try and run the panel to a garage or something and wire all the miners within 20 feet of this panel. Doing this you could easily learn to surface mount wire the entire space/mining farm. Or at the very least cut your costs by having it all wired in a compact  space.

Second you could find a local building that is empty and decently secure or even some empty office spaces. Offer to rent a part of the space or all depending on price and availabiltiy, and run your equipment there. This can be risky depending on the location.

Third option would be to send it to a hosting facility, keep as much as you can at your spot, and send the rest to whatever hosting facility has the best prices and space.

It's hard to say. Did it maintain 12 TH/S for long. The drop is not crazy, as there will be ups and downs with hashrate. Do you see anything when you check the miner status page? You might need to post your log to see if anyone can find a problem there.

You should post this in the marketplace section. Be warned people will want to see proof of equipment/order.
You should do the same make sure they have what they say they have.
Plenty of scammers lurking.

Signature updated

They are listed on the Canaan site as an official distributor, but I think the current price is based on them operating as a reseller still. Not sure how things will play out in the future if they will match what minerwarez sells at.

I have heard that Canaan has set what price their distributors get to sell the 741's at.


I think this email conveniently floated out to a lot of people, I recall it saying the numbers are not exact, but it's enough to get me excited. They do know how to create a buzz that's for sure

Tell him how you really feel,
had to laugh at this

Hi Phil,

Just wondering is there any reason to use silicone rubber specifically as opposed to a rubber matt you might use in a shop floor or something? Just checking as a these seem to only ship from the US, canada is lacking on options.

I use Quadriga myself and they have been good, I can't remember if I had to verify to make my low value deals,(under 1000) but I did anyways. I think it took 24-48 hours to verify. The nice thing is if you can wait for the cash you can get it deposited direct to your bank account with no withdrawal fee, but it takes 3-5 days. The fees for selling are pretty low so it's what I've stuck with.

So it sounds like you have 47 miners working. you need to figure out which 13 are failing, using whatever software you have set up to monitor your miners, or by logging into each one individually.

From there you need to go through the same process as troubleshooting 1 miner. Is it a power supply issue? Is it going overtemp? I don't really have any more steps for the s9 as I have never run one.

How long have you been running these machines? maybe they have begun to fail. I can't speak to the configuring of each miner's IP but if I'm not mistaken, each one of those machines should be getting it's own work either way. I'm no networking expert but unless you are running a crap ethernet cable I don't think that is the issue.

Sorry to say there is no easy way out, you just have to put in some good old troubleshooting effort.

For your ambient temp the cooler the better, within reason You don't want to go below -5. This means the miner and it's fans work less. Ideally you want to be getting the exhaust from the miners out of the space, and bring in ambient air from elsewhere. The specs for the Avalon say between -5 and 40 degrees I believe.

That would be if difficulty remained the same, you need to remember that difficulty will increase over the next year, so each time it does so your profits will decline. Since these are currently the most efficient machines out there, if anything can break even and then profit these should be them. Mind you with the estimate of 3000$ per machine being high if you manage to buy your equipment direct, this ROI might be lower. It's hard to predict the future, but you should do your own research to make sure mining is for you.

What you want to do is look up a mining profitability calculator. You can use this and input your data it will give you  a breakdown profits and ROI. These usually only calculate based on current difficulty and give you an idea what to expect.

Good luck

I've been curious what sort of Overtemp protection the Avalons have, if any.
If there is one, you might be on to something with his inlet temp being 42. which is 2 degrees above the specs, so you're living dangerously with good old warranty stipulations.
If 95 is the shutoff, maybe it resets itself once it drops a few degrees below that.

GHSmm[8049.54]
If this pointing to his Hashrate at the time taken, if so he is hitting it's full potential so it appears to be hashing just fine.


Learning question for myself, does PMU refer to power managment unit??

Look up a few posts in  the thread, this already points to you needing to step up your research game. This forum has tons of info just spend some time reading up.

How long have you been running this S9? Have you checked all of your cable connections it seems weird that it is reading everything but not hashing. Just wondering if you have been running it for a while did anything different happen today, did you move it around? any change in temperatures? The more info you can provide the better.

The yellow light you have means it is idle. Have you tried connecting to another pool just to see if that's the issue?
When you added the pool Information, you made sure to apply the changes?
What are you using to power your controller?
How long have you been letting it sit idle while you wait for it to hash, it takes a couple of minutes.

Wow, well I would keep on them and send an email every couple of days to check on the status. Did they have you send your miner back to them?

The error code you would be looking for is on the miner stats page, in the bottom right corner under the heading PG is where you find the code I think, it will give you a number code. Here is a link to what the codes mean
https://en.bitcoin.it/wiki/Avalon6#MM_Error_Codes
Just go to the error code heading.
Hope this helps

Edit: fixing up an old post. You find the code under ECHU in the api log