Most ovens and ranges with touch pad clock controls will automatically shut off after 12 hours. The benefit of this is the peace-of-mind and energy savings if the oven is accidentally left on. Models with no clock or timer do not have automatic shutdown.
This feature can be deactivated if the oven needs to be left on for more than 12 hours. To override the 12-hour shut-off feature, consult your model's Owner's Manual. Download a copy of the Owner's Manual.