Amana 18 cu. foot fridge from 1984, freezer on top.
Carton of ice cream in freezer. On day 1, ice cream is hard, very difficult
to spoon out. On day 2, ice cream is very soft, easy to spoon. On day 3,
ice cream is hard again, as on day 1.
Carton is in same position in freezer. Basically, nothing changes. As far
as I can tell, the thermostat is working OK.
What would cause this? Any idea??