PM me with your fridge particulars: Make, model # and serial #. I'll look it up in my manuals and see if there is a fault code for your problem. In the mean time, try operating it on gas mode to see if you get the same problem. It could indeed be a bad board, but it also could be a dozen other problem areas.
Solar Tech Energy Systems, Inc.
Victron Solar Components and Inverters, Zamp Solar Panels, LiFeBlue and Battle Born Lithium Batteries, Lifeline AGM Batteries