This Whirlpool range RF376PXDQ1 was not reaching temperature & eventually reading an F3 error code. We checked the Ohms of the sensor & it was fine. So, we hardwired it back into the oven. The F3 error has gone away, but the oven still does not get hot enough, and it also does not beep when it gets to the referenced temperature it is supposed to heat up to. So, I wonder if it is the control panel? Anyone have any ideas? Might be time to replace, I think it is 13 yrs old. Thanks!