I have an old Kenmore oven (free standing). Model C8806478980. Has all dials for self cleaning. This model has the lock button by the oven light right above the left back burner. I haven't used the oven in 48 hours and went to turn it on. the door was locked. So I decided to run a self clean through for 2 hours. My question is if I accidently pushed thelock button, do I have to run self clean in order for the oven door to unlock?