Hi.
The F10 code means the over temperature conditions. most likely the temperature probe is bad.
To test it you need a multimeter set to 10000 ohm.
Normal resistance is approx. 1100 ohm at room temp.
The sensor
Part number: 316490001 
Here are the breakdown diagrams and
Replacement parts for Frigidaire PLEFM399DCA Frigidaire/electric Range | AppliancePartsPros.com
Thank you. Post the results.
Simon.