Refrigerators often leak on the inside due to built-up condensation that occurs when the door seal is loose or broken. Inside leaks can also occur if the water supply tube connected to the ice maker is malfunctioning.
Frost-free refrigerators possess a drainage tube that carries the melted frost to a drainage pan. A clogged drainage tube can cause internal leaking. Home repair options include replacing malfunctioning parts and manually unclogging the drainage tube with water or a pair of tweezers. If the refrigerator still leaks after the troubleshooting of minor issues, it is important to contact an appliance repair professional to isolate the cause.