Rank: Guru
Rating: 88%, 172 votes
I don't think your freezer is defrosting per say it is shutting down and everything is starting to thaw out which is why the ise that naturally builds up in your freezer door is melting and leaking. If you unplug your fridge and wait 60 seconds and plug it back in it will give you any error codes that are in the unit. You should have 4 8's on your freezer door 2 for the fridge section and 2 for the freezer. Depending on what dash of what 8 is lit up is the error for a variety of parts.
If you don't have any errors that show up check to see that your door switch is functioning correctly. Shut the freezer door and peel the gasket back so you can see if the light shuts off with the door closed.