I have a Multiplus 12/3000/120, Digital Controller 200/200A, MPPT 150/50, BMV712, Lithium Iron Phosphate Battery Bank (600AH). In the past 2 weeks the inverter would not turn on (error "Low Battery") would illuminate, while the BMV712 showed 67% battery state of charge, and 12.4 volts. Seems like the condition is getting worse. Today, with 20.2 amps coming in from Solar panels, 92% state of charge, and 13 Volts I could not get the inverter to turn on (same error "Low Battery"). I Cranked up my Champion 3400 Inverter Generator which is tied into the inverter with the same 30 Amp cable that supplies shore power when I connect, and the inverter turned on immediately and was usable.
Any ideas why the inverter is not turning on and has a "Low Battery" fault with the stats above?
What do I do to fix? Ideas?
Thank you very much!!!
Leslie Olson