Normally in a frost free freezer thermostat job is supply the power to the fridge heater and when the defrost cycle is completed it will cut off the power.
Samsung french door fridge freezer frosting up.
If it fails then you can get the freezer frosting up issue.
The rubber that surrounds the refrigerator and freezer door to form a tight seal when the door is closed is called a gasket.
When moisture freezes it becomes frost.
The ice maker unit is usually not to blame and quits working most of the time due to the sensor if equipped being covered in frost and telling the ice maker.
To check the flap open the left side door and look at the black flap inside the ice chute.
When warmer moister air enters the ice room frost is formed which stops the small computer like d c.
Over time these gaskets can dry out and crack or become damaged.
The issue with samsung french door ice makers icing and frosting up and not working is due to a known leakage defect in the manufacturing process.
Voltage fan which is above the evaporator in the back of the ice room on some models.
Frost forms in the freezer or refrigerator moisture forms in the fridge when warm air enters through a door being left open warm or hot items stored inside or compartments not sealing properly.
I have a samsung french door bottom freezer that frost up with chunks of ice.
If the flap is in the correct position it is flush against the housing.