How to check everything http://www.acmehowto.com/howto/appliance/refrigerator/refrigerator.php If the evaporator coils behind the back panel of the freezer are icing up because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.
check defrost timer, defrost heater, defrost thermostat. You can turn the defrost timer till it clicks and everything shuts down. The heater should now come on. If it does, replace the timer. If it doesn't, check the heater and defrost thermostat. Turn the timer again till everything starts back up to end the defrost cycle.
Part 257 on this diagram is your defrost timer http://www.searspartsdirect.com/partsdirect/getSubComp.pd?modelNumber=TFX22JABAAA&productCategoryId=0165000&brandId=0432&modelName=REFRIGERATOR-B-SERIES&diagramPageId=00005&componentDescription=FRESH%20FOOD%20SECTION&documentId=E2134230&backToLink=Return%20to%20Sub%20Components%20list
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How to check everything
http://www.acmehowto.com/howto/appliance/refrigerator/refrigerator.php
If the evaporator coils behind the back panel of the freezer are icing up because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.
check defrost timer, defrost heater, defrost thermostat.
You can turn the defrost timer till it clicks and everything shuts down. The heater should now come on. If it does, replace the timer. If it doesn't, check the heater and defrost thermostat. Turn the timer again till everything starts back up to end the defrost cycle.
Part 257 on this diagram is your defrost timer http://www.searspartsdirect.com/partsdirect/getSubComp.pd?modelNumber=TFX22JABAAA&productCategoryId=0165000&brandId=0432&modelName=REFRIGERATOR-B-SERIES&diagramPageId=00005&componentDescription=FRESH%20FOOD%20SECTION&documentId=E2134230&backToLink=Return%20to%20Sub%20Components%20list