Freezer is cold 0F and frige is warm 70F

where is the freezer on top,side by side or the bottom.all a fridge does is blow cold air from the freezer to the fridge side that's it,if the fridge is warm there's a problem most likely in the freezer,a plugged drain or when you open the freezer door do you hear the fan blowing,if not you have a bad evap fan motor,also check your warranty it still might be covered.send the model number and i can help you,if you see water under the bottom draws or in the fridge section if the freezer is on top you have a blocked drain in the freezer.let me know what you find and i can help you

Sounds like a bad compressor relay on the main control board . To verify , pull the refrig out and unplug . Remove the 8X10 small cover , to expose the control board . Look for the blue plug with 3 larger wires going to it and disconnect from the board . Looking at the plug , you will see : wire1 , wire2 , space , wire 3 . Use a jumper from wire1 to wire3 and plug the refrig back in . This will send power directly to the compressor , indicating the board is bad if the compressor starts . If it starts , remove the control board and look on the solder side just opposite the " black boxes " and look for a bulls eye ( pin in the middle where the solder has melted away from it . Resolder this pin . If no bulls eye , replace the main board as the relay is shorted internally . If replaceing the board , your model NUMBER is important to get the correct board . Only 2 boards but model number necessary .

The fridge gets its cold air from the freezer through a vent(damper) between the freezer and fridge.The fan in the freezer blows air through it. There is a flap you adjust with the fridge temp. control. Make sure it's opening and closing when you adjust the fridge temp .
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If the evaporator coils behind the back panel of the freezer are icing up because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.

The fridge gets its cold air from the freezer through a vent(damper) between the freezer and fridge.The fan in the freezer blows air through it. There is a flap you adjust with the fridge temp. control. Make sure it's opening and closing when you adjust the fridge temp ..

Cleaned the condenser coils which were dusty but not severely so. Checked the evaporator coils which were NOT iced. Reset the fridge to coldest setting and freezer to #5 (mid range of temperature) and waited a full 36 hours. Fridge temp is 40 F and freezer is about 0F. Not sure what is different except coldest setting on fridge. Warm weather is here but not warm enough to require AC. Temps in late afternoon in house about 77-80F. Any thoughts are appreciated because I suspect this problem is not completely resolved.

does your fan blow? freezers have a fan that pushes cold air to the fridge side if fan is bad freezer will run extremely cold and fridge won't cool down and since frige won't cool down thermostat in fridge doesn't tell compressor to stop

did you check to be sure the the compressor cooling fan is operational? if this is bad it will cause a problem similar to your condition. another thing if this checks ok is that your temp control could be getting weak, ( it has small springs connected to the contacts) and may need replacing. the fact that it will get to 0f tells me that compressor and freon system should be fine.
you mentioned the warm area on the side of your door is a anti moisture feature. if this area is abnormally hot it would indicate a bad condenser fan motor which is the compressor cooling fan.
If you have any further questions let me know thanks Peyton

the problem is going to more then likely in the main control board which is on the back of the refrigerator in a little compartment this board is bad about going out if you have power surges or outages

Defrost heater is open behind back wall. order new heater #wr55x10101 remove 4 screws 2 bottom, 2 top behind light shield, defrost freezer so ice is off of evap, replace heater with new one.