Freezer the fan is working but there is no cold air going to the freezer uni

There are plenty of reasons this could happen like the following: PROBLEM POSSIBLE CAUSE Loud operating sound level • See "Sound Information" section for explanation of normal operating sounds Freezer too warm. Compressor not operating • Freezer temperature set too warm • Defective compressor • Defective overload or relay Refrigerator too cold • Refrigerator temperature set too cold • Chefs Pantry control set too cold or misaligned allowing freezer air to escape into refrigerator section • Freezer temperature set too cold • Restricted condenser air • Refrigerant shortage or restriction • Refrigerant overcharge Freezer too warm. Compressor cuts off on overload • Heavy usage • High ambient • Restricted condenser air • Defective condenser fan motor • Loose or missing condenser fan blade • Improper voltage • Defective relay or overload • Compressor motor winding • Non-condensibles in system • Refrigerant overcharge Freezer too warm. Compressor operating • Freezer temperature set too warm • Restricted condenser air • Defective condenser fan motor • Opened door • Heavy usage • Defective freezer fan motor • Opened defrost thermostat • Opened defrost heater • Loose or missing freezer or condenser fan blade • Heavily frosted evaporator • Refrigerant shortage or restriction • Inefficient compressor Refrigerator too warm • Refrigerator temperature set too warm • Freezer temperature set too warm • Return air or air supply duct blocked • Chefs Pantry control set too warm or air supply tube blocked • Heavy usage • High ambient Problem Possible Cause Freezer too cold • Freezer temperature set too cold Long off cyde • Low ambient • Freezer temperature set too warm Short off cycle • Heavy usage • High ambient • Freezer temperature set too cold • Light constantly on • Poor door gasket seal Long or continuous run cyde • Heavy usage • High ambient • Inadequate condenser air flow • Freezer temperature set too cold • Loss or restricted refrigerant Short run cycle • Light usage • Low ambient • Freezer temperature set too warm Exterior cabinet condensation • High humidity. Design accepts beads of water on cabinet exterior after 4 hours with 0° to 2°F (-18° to -17°C) freezer food temperature and 38° to 40°F (3° to 4°C) refrigerator food temperature in 84% R.H. conditions. See "Typical Sweat Pattern" section under above conditions. • Freezer temperature set too cold • Poor door gasket seal • Insulation void

Hi Gerardine.
The evaporator fan motor circulates the cold air from the coils thru the compartment. If there is only one evaporator it is in the freezer side. If the fan is not working, no cold air will get to the refrigerator compartment. The freezer may still get cold.
or go to this link and have a read up.
Why is my refrigerator not cooling Refrigerator
or this one.
fridge freezer isn cooling or freezing Google Search

do you have a full frost pattern (coating) on freezer coils or see a ice ball, if ice ball Leak in system or bad valve in compressor. not worth fixing. go on (repair clinic .com).
you have a dampener and a fan to let the cold air go to all the areas check to make sure fan is running push in light switch in freezer and llisten for fan could be problem or no power to fan from main control board.
Dampener is flapper door that lets cold air from freezer go into ref. section
are your doors sealed, gaskets, frapper between door on ref section closing.
also your return air ducts need to be clear of ice, is your ice maker working that means that it is below 10 degees and repairable.

• When the top half of a freezer is not working properly it is a sign that the air circulation within the freezer is not functioning. In other words, the freezer refrigerant is still working properly, but the cold air it produces isn't going anywhere: Instead, it is sinking to the bottom of the freezer (heat rises) where it does an excellent job of keeping that half of the freezer cold while missing the top section entirely.
  

• The air circulation problem is usually caused by a fan issue. Find where your fan connects to the refrigerant system and pumps the air out into the freezer. If the fan blades are stuck or frozen, you may be able to loosen them or replace the fan. If the fan works mechanically but does not turn on the problem lies with the motor instead. In this case, you can replace the motor or call a professional it may also be fan or evaporator
  

Only your blower on the inside will work only blowing the air around the inside of house.You get cold air from outside uni.If you just want it to circulate air then turn it off at thermostat and change the auto mode to fan.

the fridge gets its cold air from the freezer fan blowing it through small air passages between the freezer and fridge. when you adjust the temperature in the fridge you are increasing/decreasing the amount of air being let into the fridge. Two common problems that could cause the freezer to freeze but not the fridge getting cool is the freezer coil is frooze like a ice cube blocking the air going to the fridge or freezer fan is not working could be bad or froze up due to too much ice. If fan works after manually defrosting problem could be in the auto defrost mechanism. If fan don't work after manual defrost replace fan. Manual defrost by putting a pot of very hot water in freezer with door closed change water foten until defrosted.

Check your evaporator fan in your freezer. They go quite frequently these days. The fridge gets it's cold air from the freezer via the evaporator fan blowing the cold air down into the fridge and cooling it.

It appears you need to get the cold distributed from the freezer section to the frig section. This can only be accomplished by a fan that forces the cold air throught openings between both sections. Since the freezer in at the bottom, cold air cannot go upward, thereforethe fan. Chech that the interior fan (in the freezer section) is running. Check that the air openings between the sections are not blocked. Finally, if all looks good, then maybe the compressor system is slowly failing and only making enough cold for the freezer, but not enough to be circulated. Goodluck, Macgivor

Check to make sure that the fan in the freezer is running whenever the compressor turns on to cool the unit down. If the fan's not going, warmer moist air from the fridge will make the air duct frost up. The fan needs to be running to blow the cold air into the fridge section.

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