Go to miner configuration and click on the advance settings tab and then chose default from the drop down menu.
You're frequency is way too high
I noticed the same.
Anybody out there overclocking? wouldnt this be the best time to do it since payout is higher? does it void warrranty?
A friend has it running at 656MHz @ 301GH/S with 0 HW errors. But beware, this thing is heating up like hell. Good thing that its winter here

Also at that speed the 1600W rated APW3+ is at its limits! And yes, you are voiding your warranty so dont do it

Not doing it, just asking for a friend...
So, the minute it goes over 600 the warranty is gone? if that's the case, then no need to look back lol
Thanks for sharing your opinion...
btw, 301GH/s per board or you meant 901?