Freezer is fine but refrigerator suddenly stopped working

this is a side-by-side model. no problems until today, although it has an icemaker and water filtration system that we virtually have never used

The fridge gets its cold air from the freezer through a vent between the freezer and fridge.The fan in the freezer blows air through it. There is a flap you adjust with the fridge temp. control. Make sure it’s opening and closing when you adjust the fridge temp.
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

Double check your model number if you need parts location.

— Begin quote from woodchuckie;102598

The fridge gets its cold air from the freezer through a vent between the freezer and fridge.The fan in the freezer blows air through it. There is a flap you adjust with the fridge temp. control. Make sure it’s opening and closing when you adjust the fridge temp.
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

Double check your model number if you need parts location.

— End quote

the model number is actually 106.53752202.

the controls are digital; will i still be able to see the door opening as you indicate?