i have switched to your 75/15 controller. my previous blue sky, while good, has a charging algorithm that turns off the controller below 11.9 volts. therefore after long periods of low light my refrigerator draws the bank below 11.9, then the controller would not recharge or restart in the morning allowing the bank to completely discharge. Will your controller charge at bank voltages lower than 11.9? It is supposed to have a "programmable algorithm". However, I can change the load voltage but i can't find instruction on how to change the algorithm? Are they one in the same?
