It's a whirlpool side by side

Call a local refrigeration service. You need a top up of refrigerant gas.

Lower the thermostat or using the other control reduce the flow of air from the freezer to the refrigerator portion.

The defrost circuit is not working, there are usually 3 things that normally go bad, defrost timer, defrost heater, and thermal switch. Would have serviceman check it out as cooling fins on coils will cut you like a razor.

If it is only freezing on the upper shelf then you will need to replace the "air diffuser". It is not closing when the refrigerator temp is reached. Here is the part to order.

Hi,

Check out these tips...they can help you figure out what is going wrong withyour refrigerator and why it is not cooling

Refrigeratornot Cooling or Fridge not Cooling

How to Defrost Refrigerator DefrostTimer Problem

WaterRunning in refrigerator from Freezer

Refrigeratoror Freezer not Cooling or Getting Cold
heatman101

Hi,
There are a few reasons why the refrigerator part will not cool...here are a couple of tips that will help you to figure out why the refrigerantor is not cooling...

Refrigerator not Cooling or Fridge not Cooling
http://www.fixya.com/support/r3662945-refrigerator_not_cooling_or_fridge_not

How to Defrost Refrigerator Defrost Timer Problem
http://www.fixya.com/support/r3771673-defrost_refrigerator_defrost_timer

heatman101

sounds like door is misaligned while both doors are closed is the gap even from top to bottom if not than make adjustments top and bottom serews, try to find out whats draging drawers not shutting all the way ect,ect

Realized the top chrome part split into 2 pieces and then was able to remove the wood like strip in the chrome strip. Popped the top chrome anchor, reattached the handle bracket as the screw holes were not stripped, put the wood like strip back in place and slid the top chrome anchor back in place.

if the fans are working, can you detect if the compressor is also working/running?

the compressor is located at the back side , lower portion. remove the back cover and observe the compressor if it is running.

tnx 4 using fixya,

drcool

the first one sounds like it is slowly leaking freon.

•  the second Sounds like a defrost problem. Check to see if there is any frost buildup in the back wall of the freezer. If so, it is not defrosting as it should.
  
• possible causes:

1. bad defrost timer/control board
2. bad defrost heater (in freezer)
3. bad thermo switch in freezer

If you don’t know what these are then unplug the machine and let the ice melt in the freezer overnight with the door open. Then try it the next day, if is cooling fine then you need to have a service person replace one of the above items. If it still has a problem then it might be the compressor and you should probably replace the machine.