Solar Controller Setting - Temp Differential

[mstgkillr]

What is everyone setting their solar controller temperature differentials at?

I'm trying to figure out a good setting that provides efficient heating with minimal valve cycling. The temp differential that I am referring to is the difference between the panel temp which is basically air temp at the panel compared to the water temp of the pool.

I currently have my start temp differential set at 6 degrees and the stop differential set to 2 degrees.

 

[pooldv]

Mine is 4 and 2. If there is heat up there I want it in my pool!

 

[mstgkillr]

Do you notice any cycling issues with the range so close?

 

[pooldv]

No, it hasn't been an issue. It's been set like that for 4 years or so. We tend to either be hot or cold. I could see that it might be a little worse for you with more rainy or cloudy weather.