The Samsung SMH7177 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.
The door of the microwave is damaged or not closing properly.
The power goes off before the set time has elapsed.
The clock needs to be reset after a power interruption.
The vent fan is not operating at the desired speed.
The microwave light is not functioning as expected.
The turntable is not rotating or is too hot to touch.
The microwave display shows an error in the cooking instructions.