Yes the red light would come on while the A/C attempted to start. I looked at the fault in the me-arc along time ago but not the recent one, which should be still there. I wont be back to till Friday to look at it.
Other than that glitch which I believe I figured the "work around" by just increasing 1a. The Magnum equipment is pretty robust, that inverter has been on in use everyday since April 2016, inverting loads of 150a a couple times a day up to near 200a+ on occasion, the Magnum PT100 scc has not given one issue at all. The system as awhole with lfp batteries truely has been a set it and forget system in everyday use, it just works quietly in the background while we boondock.