I have a Multiplus 12/3000/120. It works well as an inverter but when I plug it into 15A shore power, it does not charge my two 206Ah LiFePO4 batteries. I also have an Orion DC-DC charger and a SmartSolar MPPT and I have been using them successfully to charge my batteries but when I try to use the charging function of the Multiplus, the "Mains On" light flashes to tell me that "the AC output current is equal to the preset maximum input current."
I have tried setting my maximum input current to different values but that does not change the situation.
Can anyone give me insight?