Gen is plenty of power to run each AC--if it won't start either one, guess you will need a mobile tech. They both run on shore power? You are starting the gen, then trying to run one of the A/Cs? Doesn't make sense to me at this point. Sorry, not much help. Your trailer is 30 amp service, correct?
2016 Tiffin 40 QBH
2015 38RSSA, traded
2005 TK3 #1869, 10 yrs of memories,
2017 F450 KR--one more Ford is it
2009 F450 4x4-died; 2010 F450-retired