I do not believe that you have any legal recourse to your dealer unless he said to you , " you can run all this stuff at the same time ." Kinda like he sold you a truck with a speedometer that goes to 140 MPH . You have no right to expect that it will go that fast . Electric toys and electric usage in RVs grows and grows . Air conditioners are still options on many RVs as well as micro-waves . The Manufacturer installs what you demand , but you must learn to use it the way that the rest of us do . Shut the air off before using the micro-wave et/al . I think that you should have studied and checked before jumping in !