Product review (4 stars): Be careful and check everything  concerning your fan and blowers if you get an F9 code!
Be careful with the codes that are being thrown by the oven!!! We got an F9 code when we set our oven to "Clean" - it would shut down and give us an F9 code -- however - F9 was the lock but this was not the issue. The final issue was the FAN blower assembly --- we replaced the fan blower assy. and it's back to working fine now - GE was NO help with helping us figure out the codes or the issue after we swapped out the lock! They wanted us to call a service man -- that would have cost double the part cost alone -- just be careful to check and see of air is being forced out from both sides of the oven - if it's not, chances are good that your fan blower may have blown