It's difficult to diagnose a problem with so little information but it's probably failure of the electric element. If you look up the diagrams for the fridge you should be able to find the part number for the element which you can obtain from a caravan shop or an online retailer.
As above -- impossible to say without details.
Are you connected to the mains, is the fridge plugged in, has one of the trip switches tripped?
The interior light will be powered by the 12 volt system so is irrelevant.
DaveS1
Could be element. maybe trip has tripped out, take a look at your distribution board or could it have been just turned off at a switched plug.as said the light is 12v so no indication that mains power is reaching the fridge
Hi guys thanks for the return posts, yes the internal light works but as you say this is 12 volt the other light is the one on the switch outside on the front is this mains or 12 volt?