I have a fisher & paykel n325t fridge. can not get the correct temperature. not cold enough.what should te dial be set at?

If your refrigerator had 7 postions you would set it to 4 check this for me though remove the rear panel in your freezer and assure that you dont have a ice build up on the inside this happens when you start getting a defrost problem also assure when you remove that rear panel that the fan is working the fan blows the cold air into the refigerator side also if youor refrigerator had 4 postions you would set it on 2 send me your model number and check out to see if your starting to get a defrost problem and well go from there thanks again
Rick
if you have an ice build up use a hair dryer to melt the ice this is a temporary fix until we can solve if it does have have a defrost problem or not