You didn't say how you know the oven is running about 45F below what you programmed. Are you using a good quality thermometer?

The owner's manual says: "Auto Recipe Convert: Auto recipe conversion reduces the convection baking temperature automatically by 25úF when turned ON. You still input the recipe temperature and the oven control
does the rest. To change the setting, press the OPTIONS pad and turn the
dial to AUTO RECIPE CONVERT. Press the dial to enter. Turn the dial to
change the setting to ON or OFF. Press the dial to enter."

What happens if you try changing that setting?

Caliente63,

Thanks for the info. The temperature 45 low was confirmed by the service techs thermocouple.

I checked the settings like you suggest and indeed auto convert was on. The service tech (third party) did not know about it.

So with the 25 down from convert I am still about 25 low. However the tech says that is within the spec (+/- 25F) of the oven.

I can live with that, just adjust by recipes accordingly.

This is a very old thread but interestingly my Advantium is also exactly 45° lower than the setting, and I always have Auto Conversion OFF. I just set it 45° higher and that mostly works except for recipes that call for 450° which is the higest setting and results in 405°. I wish I could calibrate and boost it even a little.

I assume the thermometer I used to check it is accurate because when I put it in my expensive KitchenAid convection oven it reads exactly the same as the oven setting.