If it was older I'd suggest opening the case and looking to see if a fuse was blown or a wire was loose, but since it's so new I'd let the warranty handle it. I'd also contact the mfg. of the oven in short order to see if they can speed up the process. A lot of times they're more responsive than an RV dealer.
Salem 29RKSS Pushing a GMC Sierra 2500HD!
Gotta go campin!