Appliance Connections service was fantastic BUT the product GE Profile PVM9179 series microwave/convection oven as well as GE Customer Relations SUCK. The unit does NOT operate at correct temperature in the convection setting. You are supposed to be able to set the Temp to 425*F but the highest temp we could get was 350* F even after letting oven preheat and bake for 30 minutes. Working with local GE repair service and GE Techs we were told that even after replacing temperature sensor and control board that the program was designed to work this way. If you set temp to 425 * the unit heats up to "set Temp" even though thermometers placed inside the unit reads 350.
Even though the GE brand is attached to these unit they are actually a Haier product made in our case Malaysia. When Haier brought GE in 2016 they obtained the right to use GE brand until 2056/ Also along with GE, Profile, Cafe, Monogram, and Hotpoint. are now Haier
If your unit work as it's supposed You are Lucky.