Samsung RS68N Series Service Manual page 66

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PRECAUTIONS(SAFETY WARNINGS)
4-4-2. Self-diagnostic function
1) Self-diagnostic function in the Initial power ON.
1-1) Micom operates self-diagnostic function to check the temperature sensor condition within 1 second when the refrigerator
turned On initially.
1-2) If bad sensor is detected by the self-diagnostic function, the applicable display LED will blink for 0.5 sec.
At this moment, there is no beep sound.(Refer to self-diagnostic CHECK LIST)
1-3) Self-diagnostic button is recognized only when the error is displayed by the bad sensor.
Display does not operate normally but temperature control will be controlled by the emergency operation.
1-4) When the error is detected by self-diagnosis, the error can be canceled automatically if all troubled sensors are corrected
or Self-diagnostic function key Freezer Key + Alarm Key are pressed simultaneously for 10 seconds. (Return to normal
display mode)
2) Self-diagnostic function during normal operation.
2-1) If Freezer Key + Alarm Key are pressed simultaneously for 6 seconds during normal operation, the temperature setting
display will operate for 4 seconds (ON/OFF 0.5sec each).
If Freezer Key + Alarm Key are pressed simultaneously for 10 seconds (including above 4 seconds), self-diagnostic function
will be selected.
2-2) At this moment, self-diagnostic function will be returned with buzzer sound. If there is an error, display of error will be
operated for 60 seconds and then return to normal condition whether problem is corrected or not.
(Refer to self-diagnosis CHECK LIST)
2-3) Input by button is not accepted during self-diagnostic function.
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