Fridge Problem. My fridge keeps turning off intermittently. It might be alright and stay on for a

Question

My fridge keeps turning off intermittently. It might be alright and stay on for a few days then it will just turn off. There is a reset button on the back which turns it back on again. I thought it might have been from the door not closing properly and maybe the motor had some sort of shut-off that you could then reset with the button on the back, but it will also turn off after it has been running for a few days and not opened. I have looked at the seal and it looks fine. Any help you could give me would be much appreciated. Thanks