The problem appears to be that my solar array wasn't recharging the batteries. By this point, the generator switch (on the top of the genny itself) was flipped back to "on" (no idea how it was turned off), but the tech noted that the solar wasn't recharging the batteries. He advised that the Battery Disconnect module needed replacement, as each side of the BD module was of different voltage (14.1 vs. 13.1), indicating that the solar wasn't recharging the batteries... Have to assume this is a correct diagnosis, but would like other input to get a better idea of the process... thanks