Freezer stopped freezing. fridge seems to be working right. Fan in freezer is running. adjusted temp control but no change other than trying to make freezer colder makes fridge somewhat warmer
Here are your parts
http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=CTF1920ARW
It is just a matter of time before the fresh food side also gets warm as it gets all its cooling from the freezer.
First you have to determine if the compressor is running.
Usually you can hear it running also you should be able to feel it vibrating and it should be warm.
If the compressor is not running then it could be a thermostat or a compressor start device or a compressor problem.
If the compressor is cycling on/off then odds are that is is a thermostat problem.
If the compressor is constantly running then it could be a sealed system problem or a defrost problem.
Here is are good links with basic fridge repair info
http://www.applianceaid.com/frig.html
http://www.acmehowto.com/howto/appliance/refrigerator/refrigerator.php