Samsung RF28HMEDBSR Service Manual page 62

TROUBLESHOOTING
4-1-3. 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 + Fridge Key ) are pressed
simultaneously for 8 seconds.
(Return to normal display mode)
①
2) Self-diagnostic function during normal operation
①
2-1) If Freezer Key + Fridge Key are pressed simultaneously for 6 seconds during normal operation, the
temperature setting display will operate for 2 seconds (ON/OFF 0.5sec each).
If Freezer Key + Fridge Key are pressed simultaneously for 8 seconds (including above 2 seconds), self-
diagnostic function will be selected.
2-2) At this moment, self-diagnostic function will be returned with buzzer sound 'ding-dong'.
If there is an error, display of error will be operated for 30 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.
①
① If Freezer Key + Fridge Key are pressed simultaneously
for 8 seconds, the error mode by self-diagnosis will be canceled.
①
② If Freezer Key + Fridge Key are pressed simultaneously
for 8 seconds, the self-diagnosis function will be selected.
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