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You may have damaged the control board when the voltage dropped. When this happens, the amperage spikes. Did you disconnect the power and rehook it up again? IF NOT, turn the fridge off and disconnect the DC power into the board at the rear of the fridge.......let it sit for a few minutes and then hook it back up again. You can do the same thing by NOT having the AC power on and disconnecting the battery for a few minutes. Then hook it back up again and turn it back on. Let me know what happens and we can go from there. All follow ups are included in our fee.
Then I suspect that the board is damaged, but let me dig out my manual on this when I get a few minutes. I am still at the shop for about another hour. I will get back to you today.
Go to the link for the manual on this and see page 9. Several other things to check. Can you check the DC fuse after you get the cover off the board? http://www.atwoodmobile.com/manuals/refrigerators/ENGLISH_Refrigerator_Manual_8.pdf
Was the fridge out of level for some time here?