You open your refrigerator and immediately notice something isn't right. The milk isn't as cold as usual, drinks feel warm, or food is starting to spoil. A refrigerator not cooling properly is one of the most frustrating appliance problems—and it doesn't always mean you need a new refrigerator. Sometimes the cause is simple. Other times, the refrigerator may have a problem with a fan, sensor, compressor, or another internal component. Here are eight common reasons a refrigera