Blue Sky 3024I Solar Controller

[tuberider]

Hi everyone, i have a 3024i solar controller and i'm setting up the aux. terminals to turn on and off my refrigerator compressor thru a relay.I have a 24v system. The default settings on the 3023i are to cut off at 23v and cut in at 25.2v. I want to get the longest running time on my compressor so I was wondering if the 23v was a good setting or should i bring the shut off time down a little more. You can program the controller with the IPN-pro Remote to whatever voltage you want.