GE side by side refrigerator; frost-free freezer freezes up causing fridge to warm
We have a GE frost-free side by side refrigerator with ice maker. It's 5 years old but for the past year+ we've been having problems with the freezer building up frost around the inside, and then the refrigerator doesn't get cold. I have to unplug everything, take the shelves out of the freezer and then blow-dry it sometimes twice a month, and then the refrigerator gets cold again. I've replaced the coils which I thought made it work, but only temporarily because it started doing it again a few months later. I saw a response to someone with a similar problem stating that the defrost element or defrost thermostat was probably faulty. Is that the same thing as the coil? If so, what would cause it to go out again so quickly? The seals around both the freezer and the fridge side are fine, so that can't be what's causing the problem. I've removed any dust buildup both under and on the back of the fridge. I'm afraid to replace the coil again because I'm not sure what keeps causing it to go bad.