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That probably isn't the problem. Most of the time these Atwood fridges have issues with the heating element. At least that would be the first thing to check as well as the fuse for the heating element on the circuit board. The element can be checked with a small digital multimeter. Be sure and upplug the fridge first! Hope that helps some here. Please get back to me if you need more as all follow ups are included in our fee.
You should check the control board and heating element first. I doubt this is the control panel.
Just checking back in to see if you were able to resolve this or do you still need some additional input from me here?