I have a Sharp convection oven in our motor home and I use it like a regular oven that I have at home.
1. Preheat. Hit the preheat button and put in the temperature you want. Hit Start and wait for it to preheat. If I remember correctly you can hear it when it is heated.
2. once heated Hit Convec and put the temperature in again, set the timer, put your food in the oven on the rack and hit start.
Now if you are say baking cookies or muffins and need to bake a second batch you will have to Hit Convec again, put the temperature in again, set the timer again and then hit start.
I don't lower the temperature for the convection oven but I do shorten the baking time maybe by 5 minutes for something baking 30 min. according to the recipe.
