Refrigerator works and later stops? My refrigerator works good for around a month and then it...

My refrigerator works good for around a month and then it stops working... It isnt cool anymore. I enjoy to unplug it for a day and consequently plug it in again. After doing that, it works honest again. What is wrong?
Answers:    I would guess the self defrosting system is gone down. When enough frost builds up on the evaporator, the enthusiast can't move any air, and you own a no cooling situation. When you turn it off the frost melt off and it works o.k. until it builds up again. One of three components will result in this, defrost timer, defrost thermostat or defrost heater.
I would check the coils,probably have need of cleaning.
Normal household dust ,pet hair can clog up the nouns that stops the air circulation.That will surrounded by turn freeze up and stop cooling until thawed.

Just verbs out from wall and clean coil amd motor nouns.