How to find the make of refrigerator & defrost the freezer?

the ice forms very quickly in my freezer and I am not able to find the de-frost on. is there a place where I can find the defrost on? I know I have to mention the fridge name but I cant even find that as there is nothing written inside the fridge and on the outer side it is covered by the wooden door which blocks to read the name of the fridge. Could you please help!!