Posted 03 June 2013 - 06:42 AM
Your evap may frost completely if the cover is left on and the fridge isn't defrosting unnecessarily. So I'm not so sure that's the problem.
I would begin with the obvious amd replace the evap thermistor and installing it properly. The wire nut used to connect the thermistor could be the root of your problem. Thermistors are to be installed using watertight butt connectors, bell connectors filled with silicone or soldered. If your thermistor or its connection is bad, your fridge could be defrosting too often.
Also test/replace all freezer and fridge thermistors. Make sure the damper opens and is free of frost.
What are your specfic temps?
Appliantology is, however appliances are not, an exact science for I know there are a few refrigerators that actually hate me.
The simplest explanation is most likely the correct and least expensive one, unless it's your compressor or motherboard" Occam as an appliantologist
"When you have eliminated all the impossible, whatever remains, however implausible, must be the logic truth; unless it's your compressor or motherboard." Mr. Spock as an appliantologist
"I think, therefore I have no earthly idea why this thing is not working...I got nothin'...". Rumored to have been uttered by a frustrated Descartes while diagnosing his GE Profile.