Good Morning Guys - I did start a thread but was advised to post it in here

I wish my first post wasn't a "problem" post but like so many, I found your site looking for some rhyme or reason as to the behaviour of my nice new Antminer S3+ (batch 9)

Set it up last night and all was good - hashing away at about 430-450 Gh/s as expected. Came to look at it this morning and is seems to be cuttin out all together, suddenly coming back to life as the right speed then 10 minutes later dropping off to zero before restarting again. This is after about 12 hours continuous running if that helps?

Now, I also have an Antminer S1 running and another S3 running elsewhere, both of which are behaving as they should which rules out the mining pool. I know the configuration within the unit must be right or it wouldn't be mining at all which again, rules that out.

I have this set up with an Aerocool Intergrator 600W +80W PSU (http://www.yoyotech.co.uk//600w-aerocool-integrator-psu-12cm-black-fan-active-pfc-tw-caps-acp-i600hg?var=17061&utm_source=google&utm_medium=shopping&utm_campaign=purenet_feed&gclid=CjwKEAjwk_OhBRD06abu3qSoxlwSJACt7sZ7tSqC2-7sGpNzjoxnE81zZt-dVNcJPLOx-qGd8E5SPRoCLN3w_wcB) using the daisy chained connector. Could this be causing an abnormal load on the PSU? Would it work better if the individual plugs were used?

I am also hardwired into an Ethernet Hub so no wireless connection issues.

I have purposefully positioned it so it has a clear air path all around (I work in building services so understand that in order to maximise cooling, there needs to be open air around all sides, similar to a water to air heat exhanger).

Can anyone shed any light on this as I need to get this running properly obviously?

Thanks

I'll give that a go when I get back.....I know one of the fans is certainly pushing (the opposite end to the Ethernet port)

If I find them both pushing, rather than the other one pulling air into the unit, is it as simple as reversing the connector?

my S3+ only works at 225mhz produce 252ghash and 231mhz produce 266ghash

at 250/237mhz the ant only produce 390ghash

my psu is an EVGA 1000w to 2xantminer s3

Watching how this machine is behaving, it does scream thermal cut off. It closes down while it cools down, comes back online at full speed, slows down again then cuts off.....

I'll have a look at this one tonight but an incorrectly installed fan (both push) would create a negative pressure which would have exactly the opposite effect to cooling.

It appears that PSU is a crock of turd 

Plugged in my other PSU - A Viper Powercool 500W +80 Bronze for reference - And it is working perfectly.....

Odd I thought

So I attempted to fire up the S1 using the Aerocool PSU....Booted up OK but as soon as it tried to hash, the PSU cut out

So I have now ordered another Viper PSU - stick with what you know works 

Did you try individual connectors?  Might wanna do that before spending more money on a PSU that you might not need

Not sure it was ever "free" just added into the price. You want it added back in again, I get it... I guess.

Yes, the firmware for S3 and S3+ are compatible, however, for S3, after upgrading the firmware, PLEASE SELECT 218.75 Frequency from Miner Config Tab, Advanced Setting Page.

you can under-clock it but please use caution.  Default setting is 218.75 for S3

calculate how much you get/mo (40Gh only produces 0.14/day right now) vs how much it costs.
If your electricity cost is $0.11/KWh, then you will use ~$3.2 extra/mo for extra 40W (250mhz vs 225mhz)
So, if you get 468GH vs 453Gh, then it is probably not worth it (it will get you only $1.6 extra while using $3.2 more of electricity).
I did not take into account potential savings on heating the house if it is cold already in your area.
However, I think either way it would not make much of a difference, if any.