Set temps. to manufacturer-recommended 0 deg. freezer and 37 deg. fresh food sections, but refrigerator can only bring temps. to ~17 deg. (varies +/- 3 deg. day to day) and ~47 deg. (varies +/- 2 deg. day to day), respectively.

Fridge has evap. coil and fan in both sections, freezer and fresh food, and both fans are working. Condenser fan is working also and I've cleaned dust from condenser coil.

Defrost function seems to be working, as evidenced by water in the pan at the bottom of the fridge, and the level varies day to day.

The compressor runs, and when it does, so does the condenser fan. When the compressor runs it gets slightly warm, but the condenser coil feels only at room temp. One copper tube coming out of the compressor feels slightly warm, and the other tube feels just cool (shouldn't one feel hot and the other very cold?).

Each section, freezer and fresh food, has a thermistor (to detect temp. changes?), and the freezer has a defrost heater and defrost thermostat. The fresh food section DOESN'T have a defrost heater, according to a pictorial diagram I've seen (diagram could be incorrect?), but does have a thermostat of some sort, again according to that same pictorial diagram.

I notice that evap. fan in fresh food section runs all the time when door is closed....shuts off when door is open....normal?

If a thermistor fails I understand that could cause the symptom I have, but would seem to be unlikely for BOTH thermistors to fail at once (?). If defrost heater and/or its thermostat weren't working I shouldn't see water in the drain pan at varying levels (?).

I don't see that any oil has dripped out of the compressor....understand that could indicate a leak in the closed compressor-condenser-evaporator system. If there was a leak of refrigerant (it's R134a in this fridge), wouldn't the interior fridge temps., both freezer and fresh food, continue to rise until there would be no cooling effect at all, after all the refrigerant had escaped?

Anybody know what might be going on here?