I have 4 new 100watt panels and 1old 100 watt panel made by rich and a 100w go power wired in 3s2p to a renogy rover 40a mppt. I am not getting the amperage into or out of the mppt. It shows up tp 67 volts .5amps. 12 v 2.5 amps out of scc. I need some help please