This may sound like a redundant question, though it is important to note that not every refrigerator which requires repairs simply does not cool. There are many signs to note which can aid in catching issues early. The first, and most obvious sign, is if your food is going bad quicker than it used to. A noisy refrigerator is also an indication that there could be an issue present, though you should also note that a fridge that makes no noise at all could also be faulty. Condensation on the outside of the fridge and excessive frost, particularly at the back of the inside of your refrigerator are also both signs that faults may be prevalent. Finally, check the coils of your fridge – if they are excessively hot, your fridge may need repairs.