AC not working with generator

Hello. We've had our 2014 AI for three weeks now (and this forum has been great help for us newbies). It's the first time we've tried running the AC with the generator (shore power disconnected). The generator is working correctly; however, the AC won't turn on. There is an error code ("E7") on the thermostat. Has anyone experienced the same and/or knows how to remedy the situation?



Thanks in advance,



Troy