Replaced erc and still getting F O error code key pad is frozen the only thing that works is the clock
A model number may help others help you.
http://www.appliancepartspros.com/modelnumber_locator.aspx
Looking up F0 fo GE I get a couple definitions.
A bad control board.
A stuck key on the control panel (keypad)
So if your unit has a separate keypad, remove power from the stove, unplug the keypad then reapply power.
If the error does not re-occur then odds are it is a bad keypad.