Side by side bagan acting up about 3 weeks ago...fridge was averaging 50 degrees while freezer was averaging 30 degrees.
I took everything out of the freezer and took off the rear panel. Man oh man the coils were stacked from top to bottom with frost. I defrosted with a blow dryer as I read on many websites and ordered the defrost heater. Got the defrost heater which now has a double heater and installed it. I wondered if I had received a defective part because there wasn't a voltage tag on the heater as the instructions said. Further, when I installed the part after drying everything I could, and plugged the fridge back in, the frost began piling back on before my eyes.
Well, I then went to a parts store and ordered a defrost thermostat and sensor and replaced both. I had to splice the wires of both. I disconnected the defrost heater, the new one, and dried it off and made sure nothing was wet and reinstalled it. The little plastic tip of the defrost heater looked a little bit rusted so I used the spare wire that came with the new defrost heater and replaced it...had to splice that one to.
This time, when I plugged in the fridge, I didn't see frost pile on right away.
But, it's been about 5 days and the fridge averages 42 degrees when it used to average about 39-40. It's warm up top and much cooler at the bottom but it seems like no cool air is being forced into the fridge from the freezer. Freezer is now averaging about 10 below zero.
I went behind the fridge to look at the main board and was unable to pry it from the back of the fridge...wondering how I am to replace that if I can't get it off. Actually I just didn't want to pry to hard since I wasn't actually replacing the main board at that time.
My questions are:
1) is it possible the defrost heater was defective?
2) is it possible I spliced something wrong?
3) is it possible I need a new main board in the rear of the fridge?
4) is it possible it's something else?
I figured the last resort would be to replace the main board and if no results from that I was going to call someone in for repairs. I like troubleshooting on my own.
I haven't looked behind the rear panel since replacing it last Wednsday.
I'd like to add that when I first thawed/blow dried the rear evaporator coils weeks ago while I waited for the delivery of my part, the fridge was acting normal...fridge was at 39 degrees and freezer was fine too.