Maytag fridge, ice build up in fridge sec only, freezer works good, fridge has ice build up over the evap cover makes it difficult to circulate the air through this layer of glacier and the fridge become warm, if I turn it off for couple hours until the ice been melted, it works good for several weeks. I checked the heater element at the freezer, seems good, it hasn't heater in the upper evap( fridge). I appreciate your interest, thanks for answer me.