Refrigerator is getting cold, functioning on both lp and ac. Also switches back and fort correctly from one to the other on auto. Will not turn off. Display is blinking what looks like an "r" . I have tried replacing with new updated board and display (633292). Nothing comes up on display and nothing works. Reinstalled used boards and back to original. Power button will not turn it off. Searched quite a bit. Not coming up with anything like this. Diagnostic pages dont seem to be functioning properly. Scrolled through these before so I know what they are.7 hidden pages, including a reset/clear page. Doesn't seem to be the typical issue with these refrigerators. Maybe bad display board? Any help appreciated