Top oven of our white double oven jenn air expressions does not heat. it is about 11 yrs old

Check your wiring harness, if its OK then replace the power relay board. A faulty board can cause fan issues and pull up the error you are seeing.

Check this link:
http://www.abt.com/product/7523/Jenn-Air-JJW9627DDS.html

There are 3 things that can cause this:

1. Bake or Broil element faulty. The oven cycles these on and off to reach and maintain the average setpoint temperature. If the elements heat poperly during the time they are ON, then they are OK (may be able to see them glow).

2. The temperature sensor probe is faulty. This can cause the oven to think it's hotter than it actually is.

3. The above two causes can be easily diagnosed by a technician with an ohm-meter. If they are both OK, then the problem is in the controller itself. If this is the case you may want to have us repair the controller. We see this fault quite often.

Hope this helps you out.
Regards,
Bruce
www.fixyourboard.com

More then likely your electronic clock control board is going bad. After turning the power off, you can also try cleaning the connectors on the clock board and make sure the connectors are tight. 
 

F2 - Oven Temperature Too Hot - Depending upon model, replace relay (if present) or oven temperature sensor. Make sure to check sensor harness.

I was able to fix my problem by pushing the setup button and holding for about 10 sec.No where in the manual is this described. I call Jenn air and all they could suggest is that I checked the power supply!

you can check your manual if ariund for possible 5 year warr on electronics. if so they will still require an authorized servicer to replace they wont ship to you. and all ercs are different so ordered as needed.

Get a long thin flat blade screwdriver. Gently pull the probe with one hand and press on the back side of the probe connector with the screwdriver until you feel no slack in the wires. Don't pull too hard! Rotate the blade of the screwdriver until the connector lines up with the opening and puill it through. Works for installing the new one too.

reset your breaker reprogram the clock try again what happend last time it was working self clean broiling etc