Like our mates told you, this problems generally comes from the three wires (think 70, 71, 72) of the charge battery level. If battery and wires is OK, replace A5 card

I found one case on a rrB6 series 16, that was neccesary to replace A5 logic card. Its very important the good state and tighten of negative thick wire that comes from batery to inverters. It's works like a shunt wire.

If you need any information, just ask for it.



Regards