The Samsung MW620WB Oven has some known problems that occur often. Here are some easy to do solutions for the problems or error codes your Samsung might be giving you.
This indicates that there was a power outage or the microwave has been unplugged.
This means that the microwave is set to high power level for cooking.
This can occur if the Start pad is not pressed or if the door is not properly closed.
The oven has not or cannot accept the instructions entered.
This may be due to a power outage or a blown fuse.
This indicates the completion of a defrosting cycle.