[jomigo]

Amana bottom freezer/fridge top model.
Freezer works fine - cold as it should be. Air blows around freely in the freezer. However fridge on top is not cooling.
I pulled the back inside panel off the freezer and there was considerable frost (white flakes). It was peculiar though, in that there was a very distinct line of frost on the coils/fins. Below the line was heavily frosted, above the line (closest to the fan) was completely frost free.
So I'm thinking the defrost timer or defrost unit, correct? But what is this very distinct line of frost telling me? Could it indicate which part is bad?