I have upgraded to a Multiplus 12/3000/120-16 230V from a 1600. Unfortunately I have not been able to get the power assist function to work on new multiplus. I have set the input current limit to 3A (manual indicates minimum is 2.3A), when I increase load above this it drop AC input and uses 100% inverter.
Boost factor set at 2, but have also tried at 1 on advice from supplier. I have also tried switching dynamic limiter and UPS functions on/off, but not change it still changes over to 100% inverter on increased load (~1500W).