After setting the oven control knob to Bake and setting the temperature knob to the desired cooking temperature, the oven will initially try to heat up, but after a minute or so, will display ERR code and stop. While it attempts to heat up,the displayed set temperature fluctuates and it beeps constantly. Is there a control board that needs replaced?

Gene,
Thanks for the reply. No, I set the function knob to Bake, set the temperature, and within a few minutes get the ERR on the display. I can get it to work if I select Conv Bake sometimes. I am just trying to figure out what needs to be replaced to fix this issue. This is very frustrating.

Thanks for the quick response Gene. I'll check with Sears.

I had this issue, and found the part needed on 2 other sites that are no longer open to replies. I hope this post helps the next user.
The broken part is the Temperature Control, part #318601500 (AP3951054) by Frigidaire - cost ~$50.
This part is seated in the front panel, connected to the oven temperature control knob.

The hardest part was figuring out how to remove the front panel. To do this, screws need to be removed from 3 sides. 3 screws come out from beneath the panel, accessible with the oven door open. 2 screws come out from the inside of the stovetop - the outermost screws facing the front. 4 screws need to be removed from behind the knobs - easiest is to just remove all the screws from behind the knobs. The panel should easily pull out away from the stove.
In order to replace the Temp. Control part, also remove the hex nut from behind the oven temp. knob.

Once out, the part is easily seen, and the connecting wire removed. With the hex nut removed, the part should easily lift out. Remove the black metal sleeve from the old part and place on the new one. Without that, the knob will not fit securely.

I have 30” dual fuel and if setting temperature between 300-400 it continuously beeps and searches for temperature. Any suggestions are welcome.