I'm having more problems with MPPT 75/15 controller.
I'm now having problems with the controller giving a random battery voltage reading. The battery voltatage is 12.90v (read at the battery and as the controller itself) the controller software is reading it at 14.20. The battery been used to the tune of 20ah, so needs charging, yet the controller has gone into float mode and is not delivering any current.
Panel voltage is at 22v at the moment.