Spoke too soon. Back up, and x's are appearing in the one C1 again. Wonder if it's related to the f=243.75M/0675V I'm running for efficiency.
--------------------
Okay, up 55s at normal power and frequency and no x's............1m34secs and still okay...............2min11sec 1,019 GH/s(avg) and no x's........3min15sec and all okay
Odd. It's happier at full power.
You're running at 0675v still at full blast?
To get more efficiency a week or so ago I knocked the C1's down to 243.75M/0675
No, no, I did recall, but I was wrong, didn't jot the numbers down before changing, but thought the original settings on the C1's had been 250M/0750 but I was mistaken. Ran at that for a little while then searched and found 250M/075 to be the default on these C1's.
As I said, to get more efficiency a week or so ago I knocked the C1's down to 243.75M/0675 so the two would be drawing about 9.5amps each on a 20 amp circuit tho they had been running 10a each for a while and the breaker wasn't warm to the touch. Hot summer days I needed to leave the breaker box door open so a living room breaker didn't trip with the AC on - later added two 15 amp lines and that's no longer an issue. So one can easily tell if a breaker is prone to trip as it will be warm.
For some reason, perhaps because of the humidity, after switching back to a single pump driving water thru two C1's, the original C1 was coming up x's. I jumped to the conclusion it was due to having added a slightly restrictive PVC barb but taking that out didn't correct the x's. The x's were corrected when that miner was put back to its original settings of 250M/0725. Now the two miners draw 10a and 9.5a, breaker cool.
When my S5 arrives, a circuit I had put in for my living room treadmill will be disconnected and a new temporary 15 amp line will be run to the back room.
The second C1 is still running at 243.75/0675 and gets 986.66GH/s(avg).