@Gav74: What temperature do you currently have the fridge set to, and have you tried lowering it? Can you check to see if it says 'Vacation' in the top right of your display? If it does, press the Vacation Button to disable this feature.
Can you also check if the fridge is in direct sunlight, or near a heat source? Is the back of the device too close to the wall, and preventing air from circulating?