I have a 2015 Big Country with generator prep but no genny installed. I have two 15,000 btu air conditioners. I have a Yamaha 2400 inverter genny and would like to run one of the a/c's. It ran the ac on my former fifth that did not have a prep package. I installed a hard start capacitor in one of the Big country a'c's because they have none and tried the Yamaha. All I got was a loud chattering coming from below the bedroom floor and the a/c would not start.What I would like to know is what is the chattering and is this what is preventing the a'c from starting? Some will is not enough genny. Maybe so but I would really like to know what the chattering is. I assume it has something to do with the genny rep.