Hi there. I have a Victron mppt 150/85 no Bluetooth but I do have a dongle. Everything was working fine and then boom it stop charging and shows me that charger is off. Every single wire and connection was double checked. Finally went and got 100/50. Connected it to same wires and everything is working fine. What can it be? I attached picture so you can see that all my wires and fuses are in place. Did drain my battaries down and no charge. Setting are set to litiums thats what i have. 
