Check the Dometic manual (which should be in your AS briefcase along with the owner's manual) for doing a hard reboot of the stat, and make sure the time on the stat is set. You could also turn your Use/Store battery switch off and on if this gets the stat to do its own reset IMO. [edit -- unplug your shore power first]
There are tons of threads on Dometic stat problems, so if the above does not help, go up to Search at the top right, use the lower drop-down search box by Google, and enter "Dometic thermostat problems" as the search terms.
Good luck!
Peter
PS -- Search results for "Dometic stat hard reboot" --
https://cse.google.com/cse?cx=011403...oot&gsc.page=1
PS2 -- There are also threads about checking all the wiring connections behind the stat, and in the upper unit, which require removal of the lower shroud which has some hidden screws. There are other threads about the locations of your remote temperature sensing "sending units" which may be picking up inaccurate heat readings from your fridge etc.. FYI