electric oven err code F1

I have never been able to run the self cleaning mode on this appliance. every time I try it it always shows F1 ERR and the heat goes off. This usually happens about 1 hour into the cycle. I then turn off the power and when i power it back up it resets. Today it wouldn’t reset and the F1 ERR came back on so turned the power off again and left it off for a few hours while i searched online for the EOC which the manual says i need to replace. 165.00 no problem, but when i powered it back up after a few hours it reset and we are able to use it. I know however if I were to try and run the Self-cleaning mode that it will F1 ERR. Any help would be appreciated. tony