Your ME inverter is also your house battery charger. If it is using a lot of amps charging your batteries, that draws more juice. Go into settings and set the charge rate to maybe 5 amps.
Do you have other AC loads like a residential fridge, maybe using the microwave or does your water heater have an electric element? Turn off other stuff.
Can't tell you why your auto gen start is starting the generator if your temp is set right. A call to Magnum for tech support might be in order.
'07 Country Coach Allure 470 Siskiyou Summit #31578, Cummins ISL 425; 2014 Ford F150 toad; Air Force One Toad Brake.
Glen Allen, VA; Smith Mountain Lake, VA.