Hello my name is Rick I will assist you today
F93 is a fault saying the door lock has malfunctioned in short terms.
http://www.advantagesupplyfl.com/FrigidaireRangeFaultCodes this is a link directly to your fault code and the pieces to check. I am also going to send you links for each part it could be. If you have any questions while testing the range please let me know and I will respond ASAP.
http://www.repairclinic.com/PartDetail/Drive-Motor/318261222/1614388?RCAID=1000116 This is for the door latch assy
http://www.repairclinic.com/PartDetail/Oven-Control-Board/316418530/1163603?RCAID=1000116 This is the electronic control
Like I said if you have any questions please ask
I never heard anything from you and I wanted to check back and make sure all your questions and issues were taken care of.