Also have a circuit breaker above driver's seat; however, low battery seems different.
On the command 30 what does it read for the surface charge of the batteries? If that is above, 11.5 then the batteries should not be too low...JMO.
Do the inverters read bulk, absorb, float, or fully charged? If bulk and for more than 20 minutes after you turned the engine off and turned on generator or shore power, you may not be charging the coach batteries well enough during operation. For me, I had the engine heater plugged in and the chassis alternator wasn't charging anything well enough, because the block heater was using everything up. head a similar story today at Entegra about folks that were using a space heater while on the road.
Could also be the settings on the inverter. Mine was set up all screwed up by the dealer during their checks. If that, you'll probably have to talk to a CS person at Entegra: Ted Cook worked through mine with me to get it right.
Dave and Beth
2015 Cornerstone 45J
Ford F-150 and 2016 Polaris Razor