I know nothing about this trailer, however, some people will recall a recent post about someone who said their microwave wouldn't work. It turned out there was a hidden switch to essentially choose between using the microwave or the fireplace. There was nothing in their manual about this and they had not been told about it at delivery, only other forum users knew about it; maybe this is your problem. I hope it's something that simple and the switch, if it exists, is easy to find.
Travel Trailer: 2004 Flagstaff 25LB
New Tow Vehicle: 2017 F-150 3.5 Ecoboost, supercrew short bed FX4 Lariat
Old Tow Vehicle: 2009 Silverado 2500HD 4x4 Ext. Cab Short Bed
Travel Pooch:Sophie the Sato - Cats: Rhody and Hazy
2018:22nights / 2019:31Nights / 2020:18Nights