Hi - long-time customer, but first time poster. I have the twin all-freezer and all-refrigerator Frigidaire Professional Series (two independent appliances). About a month ago, the refrigerator started slightly freezing the contents even though the temperature had not been changed (38). I tried raising the temperature to 40, and then 42 over the next week or two, but it still kept trying to freeze.

Not being sure where the temperature is measured, I started moving things around inside. While the refrigerator was fairly full, it had certainly had more in it in the past. One thing I changed was moving about a dozen cans from the top shelf on the right out of the refrigerator completely (I had some houseguests about a month ago who left them behind). I don't know if it was a coincidence or that was it, because things seemed to return to normal afterwards. I then noticed things started sweating, so I lowered the temperature back down to 38 and all was fine for a couple days.

Very early this morning (5am), I heard the refrigerator alarm go off. When I opened it up, it was at 56 degrees. I turned it off for about 5 hours, then turned it back on. It went from 63 down to at least 56, but the alarm went off again within an hour, because it was 56 when I opened it. I'm not sure if the residual coolness of the items in it caused it to drop from 63, or if it actually was cooling down, but something is clearly wrong. I did hear three loud pops over the course of two days come from the kitchen (I was in the next room), but don't know for sure if they came from the refrigerator.

Naturally, the refrigerator is just barely older than one year. To make it a little more complicated, it has the trim kit which makes it built-in. I'm dreading taking that apart because I know how involved it was getting in on and just right.

I've never really been able to distinguish between the sounds it makes (maybe because it's built in). When I turned it back on this morning, a motor of some sort did switch on. My guess is there are a couple things going on. Whatever caused it to freeze liquids was the first problem, and then maybe that overworked it and wore out the cooling mechanism?

I figured I'd run this by the experts to see if anyone had any thoughts. If this is going to require multiple expensive parts and a lot of labor, and even then other parts may fail as well, is it worth fixing it? Or might the appliance gods smile down on me and it just be a thermostat issue? Any thoughts would be very much appreciated!

denman - thank you so much for taking the time to read my post, reply and going the extra mile by posting the service manual - I very much appreciate it!

Last evening, I did go ahead and disassemble the trim kit and pull the refrigerator out. The condenser fan was running, the compressor was running (warm, but not hot to the touch), and I could hear the evaporator fan running (I didn't get to taking the inside apart, yet). The copper line on the back near the compressor was cold and slightly sweating where it exited the pipe insulation.

If the evaporator coils did in fact freeze up, would they have unthawed in the 5 hours I had it switched off? If so, then I'm fearing the worst and think it sounds like a sealed system problem. I'll still check the coils when I get home this evening to be sure.

I also don't trust the machine now. Looking at the service manual you kindly provided, it looks like a thermistor or thermostat problem could have been what started this all, but if that caused it to over exert itself and strained other components, should those be replaced anyway? While anything with the sealed system I think is best left to the pros, I'm a person who wants to fix it right the first time, and if it means replacing things that are questionable and can lead to downstream problems later, I do it.

The compressor did seem like it had been running a lot looking back. Would that have shortened its life? I know you have to take everything you read on the Internet with a grain of salt, but there are some negative reviews of this component (I know nothing is perfect). If designs have been improved and components are now more robust, I'm for replacing them now. If in six months I'm pulling this thing out for another problem, I won't be happy.

Your thoughts are very much appreciated! Do let me know what you think.

My refrigerator is approximately the same age as this one and my initial problem began in March 2014. I had a professional repairman come out and replaced the filter dryer. He put freon in the unit and it continues to have the same issue. The refrigerator has started freezing food items and I expect that it will soon go out. Did you replace the refrigerator or did you fix it? If you fixed it, what was your fix? Feeling really aggravated with Frigidaire because they seemed to have engineered "functional obsolescence" into the unit and it is breaking down sooner than later.