Shut down your Frigidaire Gallery series oven and wait for it to cool completely. Open the oven door and remove all of the racks. Set those racks aside in a safe place well away from the oven.
Open the bottom drawer of your oven and remove any stored items. Set them aside in a safe place.
Move the oven control knob to the "Clean" setting. Select a cleaning level based on how heavily soiled your oven is. You can adjust the cleaning time for a lightly soiled, medium or heavily soiled oven.
Push "Start" to begin cleaning your oven. The oven door will automatically lock until the cleaning cycle is complete.