Hi all. I have a new installation of lithium house and AGM chasis. I added the BMV 712 to the system with wires connected as per diagram and pictures found here. The BMV 712 is reading a discharge(negative #) current and watts when charging and a positive current and watts number when disconnected from charger and a load on the house batteries. Could the data cable of the 712 be corrupted or the PC board have a glitch?