Fridge light and temp settings off.

adjust the temp on the freezer setting where it links up with the frig'...

Condenser fan at compressor working?

If it is freezing, either you need to turn both temp down to 2nd to lowest setting. Cold air does sink, so that is why crisper gets colder. There is a flap and vent for air between the fridge and freezer. The flap can get stuck in one direction, or the acutator that moves it can become faulty. A leaky door seal will also make the opposite compartment colder.

My Maytag (side by side) had a similar problem, turns out to be the damper door. The freezer does the cooling, there's a damper door between the fridge and freezer that opens and closes to control fridge temp. Find the damper door and prop it open. If the fridge temp drops overnight, you'll need a new damper ***'y.

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. Make sure this fan is running. You may have to hold the door switch in for it to run. There is a flap you adjust with the fridge temp. control. Make sure it's opening and closing when you adjust the fridge temp.
The problem could be the electronic control if you have one or the mechanical linkages.

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.

Fan needs to be replaced. Common issue and easily done. Please contact me if you need further help or leave feedback if appropriate as that is how I get paid. Thanks for letting me help you!

It is possible it has a bad thermostat but most likely cause would be a bad damper motor.  It is the vent inside the fridge that opens and closes, based on temp. setting, to allow cold air from the freezer into the fridge section.

open the freezer and check if you can hear the freezer fan running if not replace freezer fan. also you could have a defrost problem.