GE JCBS660 Owner's Manual page 24

Pour 8 ounces of water onto the
oven oor.
24
(JCBS650 model only)
A 30-minute cycle will begin to count
down on the display. It will not be
possible to open the door until the cycle
ends or you press the Clear/Off If door
is opened during steam clean cycle,
"dor" will appear on the display and an
error beep will sound upon opening the
door.
"dor" will appear on the display.
NOTE: Water will remain and will be still warm
(this is normal) this will need to be wiped up
at the end of cycle.