To defrost foods in a convection oven, set the oven on Pure Convection™ at 135°F. Place the food on a rack inside a roasting pan to pick up any juices. Place the food in the oven on rack position 3, counting up from the bottom. Periodically check the food for its progress.
Keep in mind that a turkey, or anything that takes an exceptional amount of time to defrost would not defrost well in a convection oven. Anything that would normally take over 2 hours to defrost will not work because it is left in the temperature danger zone (between 40-140°F) too long.