The refrigerator coils freeze up after a few days.... we have had the compressors, switches, and thermostat replaced. It works fine for a few days but the coils then freeze up again.... I have to turn off the refrigerator for several hours and then it works good for 2-3 days. and then it freezes up and off we go again. the person who has fixed it says the evaporator fan is fine. Any other thoughts???
Donna, the model posted probably has a adaptive defrost board. You definitely have a defrost problem. I hate changing these out. They can be a challenge. It's located on the right side in back on the refer controls. You have to remove the control panel. There are 2 slots in back where you can get a finger in. Pull down on these tabs and pull out at the same time. The control panel housing will pull off. This can be a real bear to do as I always fight with them. Next you would remove the light fixture screw on the right side. A little farther back will be another screw holding the right side of the upper panel. Then there will be one on the back wall next to the filter holding the upper panel there. Now the right side of the upper panel will drop down enough to get at the adaptive defrost board. You should do a test on it by shorting between L1 and test that are marked on the board. When you do this the refer will go into defrost for approx 23 minutes. If you short between the 2 and it jumps right back out of defrost, then you can assume the board is bad. I really believe that this is your problem as I have had many of them in the past. The heater and bi-metal on the evaporator usually never fail. But to be sure, you can do the test I described above. Now some models do have a mechanical defrost timer, but on the msd2758gew it should be adaptive. You can get an idea of how this board looks by going to repairclinic.com, entering your model number and following the links to get the part you need. Catriver
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will pass this on to our repair ... hopefully this will do the trick... thanks for your help.
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