9-10) Defrost Function - Samsung RS257BABB Service Manual

Operation Function
5) Ice off function
5-1) When the Ice off operation is selected by Ice Type button, the ice making process will cease.
5-2) When the ice making process ceases, the final state will be the ice tray with supplied water.
5-3) When Cubed or Crushed operation is selected again, the control board will check an accumulated time period.
After making it 60 minutes and when the ice tray temperature is acceptable, ice ejection process will begin.
6) Functions when the freezer door is open
When the freeze door is open, all ice maker related processes will cease in order to minimize noise and to prevent ice
from dispensing.
6-1) The ice tray stops moving regardless of the position.
6-2) The water supply process remains working as usual.
6-3) If the ice tray is in the middle of ice ejecting process, close the freezer for 30 seconds and check if the tray is
leveled. If it is not leveled, it must be out of order.

9-10) Defrost Function

1) A defrost is determined based on the accumulated compressor on-time.
2) When the power is engaged for the first time, the defrost cycle for the freezer and the refrigerator will begin after 4
hours of the accumulated compressor on-time.
3) A defrost interval depends on the ambient temperature, the number of door openings, and the door open time.
4) A minimum interval is 6 hours and a maximum is 8 hours for the refrigerator, and 12 hours and 16 hours for the
freezer, respectively.
5) The defrost heater on-time is determined by the defrost sensors as follow :
Heater ON
Heater OFF
Refrigerator
Below 50℉
63℉
29
Freezer
-
50℉