Frigidaire electrolux double oven pro series upper oven not heating properly wont keep temperture

Replace the heating mechanism or control board

Hello Dana, thank you for your post!
From my understanding your Frigidaire oven is displaying an error code of "F8" and your keypad is not working properly. An "F8" error stands for runaway temperature (overheating). I would recommend performing a reset on your oven and you can do that by disconnecting the power cord for at least ten minutes.

If that does not help correct your issue then you could have a problem with your RTD (Resistance Temperature Detector) or the EOC (Electronic Oven Control). I would suggest having a professional technician out to perform a proper diagnosis and repair. I hope this information is helpful. -Matt

What is the model number? Reset the unit by unplugging or turning the circuit breaker off and then retrying.

Hi
This means a loose/broken wire on the oven temp sensor or the sensor is bad and should be replaced. To solve this issue start by checking the oven temp. sensor for 1100 ohms, if the rating is more then that then check the control board however, as the issue is only with upper oven it is most likely that the temperature sensor is bad and should be replaced. Hope this helps...please post back for further assistance.
Daniel

If both elements are not working properly then the problem is either the temperature probe or the control board.

Replace the temp probe first.

replace the upper oven calrod element it is an easy job just unplug the range turn the range around remove the back plate loosen the element wires from the element remove the element from the front any parts supply will have your replacment part such as www.applianceparts.com

F1 Electronic oven control failure Replace electronic oven control (also called EOC or clock).

sounds as if perhaps there has been a thermal overload(switch) tha has gone bad, refer to part number 119 on bothe the lower and upper oven for refernce , you should have continuity trough the switches.
ftp://ftp.electrolux-na.com/ProdInfo_PDF/Lassomption/5995383394.pdf

Check to be sure your racks are all slid in to the back. Are you getting a error code?

You could very well have an electrical problem. You may not be getting the full 220 volts needed to make the oven function correctly. Call a local appliance technician or electrician for service.