Samsung RF23HT Series Service Manual

62TROUBLESHOOTING4-1-3. Self-diagnostic function1-1) Micom operates self-diagnostic function to check the temperature sensor condition within 1 second whenthe 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 notoperate 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 troubledsensors are corrected or Self-diagnostic function key (Freezer Key + Fridge Key ) are pressedsimultaneously for 8 seconds.(Return to normal display mode)2-1) If Freezer Key + Fridge Key are pressed simultaneously for 6 seconds during normal operation, thetemperature 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 60 seconds and then return to normal conditionwhether problem is corrected or not.(Refer to self-diagnosis CHECK LIST)2-3) Input by button is not accepted during self-diagnostic function.1) Self-diagnostic function in the Initial power ON2) Self-diagnostic function during normal operation① If Freezer Key + Fridge Key are pressed simultaneouslyfor 8 seconds, the error mode by self-diagnosis will be canceled.② If Freezer Key + Fridge Key are pressed simultaneouslyfor 8 seconds, the self-diagnosis function will be selected.①①①①