Is the evaporator fan in the freezer running. It blows cold air into the fridge side through a damper in the wall between the freezer and fridge. Make sure the damper is open.
Below the evaporator fan is the evaporator coils. Remove the back cover in the freezer to observe the frost pattern. stopped up? clear? ice in one spot . frost everywhere.
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. In that case
check , defrost heater, defrost thermostat. Refrigerator Repair Guide: How To Fix a Refrigerator - ACME HOW TO.com
In your unit you don't have a defrost timer you have the adaptive defrost control. It senses when to defrost based on how many times and for how long the door is opened. It's more energy efficient but there does seem to be lots of problems with the board. If the heater and thermostat are ok it's the adaptive board. |