Freezer is fine but the lower compartment is just cool not cold temp setting is turned to coldest

Try defrosting the fridge. Check the cold plate at the back of the food compartment once the fridge has been defrosted and turned back on again. The cold plate in the freezer (around the walls) will be cold to touch as will the cold plate at the back of the fridge,

The dial inside the fresh food compartment, the bottom compartment
set to middle or above (higher numbers mean colder). Usually 5 to 9 if it has numbers.

Freezer knob in the middle if it has one. (If you set a freezer knob to "colder" it cuts
off the cold air to the lower compartment). Hope this helps

Make sure that if it has a "colder" knob in the freezer section that it is not set all the
way over to coldest. This blocks all cold air entering the lower compartment when
set this way. It actually has been eliminated on some models.

Also you may have ice buildup in the stack assembly that feeds
the lower compartment or even a frozen upper compartment behind the back
panel of the freezer limiting air flow to the lower compartment. Make sure to unplug unit if service is necessary in these areas. I hope this is helpful.

i take it the unit is frost free you need to replace the defrost element in the freezer whats happening is your freezer sends cold air through small holes to the fridge compartment but when the freezer cant self defrost those holes freeze over thus no cold air into the fridge compartment get a tech in to check the element shoulnt cost more than $ 80.00

Yes The circulating fan behind the rear freezer wall is waring out. The fan with labor and material cost is around $300.00.

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.

In your freezer section, there should be a "control" for the freezer temp. I say "control" because the knob is attached to a flap that only controls airflow the the lower section. If the knob is turned to coldest it will block almost all of the air from getting into your fresh food section.

Hi, Have you noticed an ice or frost build up at all in the freezer section. Is the freezer holding a zero to 5 above temp?
I will try to help you though this. please let me know.

Thanks
Vic

First, I think it’s important to know that the Ref side has no cooling coils, it’s basically a box and the cold air in the freezer is blown over by a fan through a channel into the Ref side. This channel has a door which regulates how much cold air goes through. You probably have two control knobs in the Ref side, one controls the temp with numbers 1-9, 9 being the coldest. This temp control tells the compressor how long to run. The other control is for that little door and it may have letters A-E, E being the coldest. If you set it on E (coldest) then this will close that little door and keep most the cold air in the freezer.
So, how can the Ref side be cold and the freezer side not freezing?

1. Coolant leak. There is enough coolant to keep the Ref side cool but not enough to freeze on the freezer side.

2. Defrost system failure. The coils on the freezer side are clogged with ice and it's just a matter of time when the Ref side won't cool either. The back wall in the freezer will be covered with ice/frost

When you open door to freezer do you hear a fan inside that compartment blowing? If you don't the fan motor is shot and will need to be replaced.