Running into an issue, when I am running my A/C off of shore power, I get some kind of buzzing/surge from the Multiplus and it causes a L1 overload and trips the circuit breaker. I disabled power assist and it does the same thing. I also monitor the remote console, and I never see the multiplus go into pass thru mode. If I don't have it on shore power and I put the Multiplus in inverter only or in on mode. I can run the A/C with no issue off my battery bank.