If you feel like troubleshooting, there is a process in the manual.
http://bryantrv.com/docs2/docs/ncoldnnewnseries.pdf
Another possibility is simply resetting the control board.
Instructions for Resetting a Norcold N611, (borrowed from justanswer.com):
Resetting involves making a jumper wire using a piece of 12v wire, about 4 inches long...
remove the control board cover and you should see a large wiring connector going to it, 16pin connector..
you need to insert one end of this jumper wire into pin 15 on that plug.. should have no wire going to it.. but its the top left, 1 from the end...
touch the other end of the jumper wire to a good ground, best to use the ground connector at the bottom of the board, where your 12v comes in.. make sure it is ground though..
hold the jumper wire there for a while, should hear the board click when it resets...
remove your jumper wire and then let the fridge run and see if it operates normal then...
remember it may take up to 8hours to cool completely if it is not already cool.
best to leave it over night...
if you don't hear a click or you still having problems, then this would mean you have a fault in the board or other problem that will need addressing...