I can't remember the model #, but my question is pretty simple. My oven gave me an error of F3, the repair site said to replace the temp. sensor. I replaced it and i'm still getting the same F3 error. Should I replace the clock, or is there somthing else wrong.

Our Roper was doing the same thing. I have replaced the sensor & the Control Board (Clock). I don't know if yours has one or not but mine has a wiring piece that plugs between the Sensor Leads and the Control Board. It's about 3" long. It has two wires between the plugs. A tech told me I wasn't getting any continuity from one plug to the other. I tried to replace this piece but it's not available. It's not on anyone's drawings, not even Whirlpools (Roper). I ended up buying a new Thermal Cut-off (Which is one of the wires on the wiring piece) and cutting the old one out and soldering the new one in it's place. After ALL this I plugged it in and still got the F-3 code. It looks like we will be buying a new oven! About a $1500 expense for a $3 piece. If you find something else that works I'd like to know about it.

I fixed my problem!
It was the wiring piece that plugged in between the "Clock" and the Leads coming from the Sensor. One of the wires as I described between the plugs was a Thermal Resistor. I ordered one from Mousser Electronics and replaced it. I had to cut the old one out and the new one comes with crimp lugs. (Don't solder it or you'll blow the resistor again) I tried that. Good thing I ordered two. ($1.22 ea) I am beginning to think the problem started when we had the oven go through a "Self Clean". The high temperature must have blew the resistor. kmccutcheon5, does your oven have one of these wiring pieces? If so It may be your problem. It has a different plug on each end so you can't wire it direct to the "Clock".

Greetings to everyone!

While researching the F3 error on my Roper model# B9458B0 oven I came across this thread.

We have the same issue; I have disconnected the top panel and found the short pigtail coming from the clock to another wire pair leading into the top/back of the oven. One side of the pigtail has a thermistor, both wires read 0 ohms when measured plug to plug. Is this correct? Also, the temperature sensor disappears into the back of the oven, how can I disconnect it from what it is plugged into? Should I be able to measure any resistance across the wires at the end of the sensor to determine whether it is defective or not?

Thanks in advance for your expert input!

tmswartz