I have a Whirlpool et8lfkxkq with the freezer on top. It has been making a clicking noise. During this noise it is blowing air to the freezer but its not cold enough to keep items frozen. The clicking takes place every few minutes. This has been an on again off again problem for the past couple of weeks, it will do this for a day or two and then be fine for a week or so. There are no frost prolems in the freezer and there is no moisture in the fridge. I would like to figure out if this is something I can handle by myself, or if I will have to call someone in. Thanks in advance for any advice.

Eric