Samsung oven door is locked

As a safety precaution, your range's door will lock when the oven gets too hot. This is to prevent any possible injuries. If your oven is cool, then you may have Child Lock turned on or need to power cycle the range to unlock the door.

Self Clean warnings Warning: Failure to follow these precautions could result in damage to the oven, fire, and/or personal injury. Follow basic precautions when installing and using this range to reduce the risk of fire, electrical shock, injury, or death to persons, including: Do not leave children unattended near the range during a self-cleaning

The door on Samsung oven and range models is removable, so if it is not properly closing, it may have been removed and not been put back on correctly. It's also possible the door latch may be stuck in the locked position even when the door is open. And if there's any physical damage on your range or oven, it will require service to fix.

When one of the burners on your cooktop is not working, but the others are, then you probably need service. There are a few exceptions to rule out first so you don't waste a service visit on something simple.