LG LRDN22734SB Service Manual page 25

8-1-4 CONTROL OF FREEZER FAN MOTOR
1. Freezer fan motor has high and standard speeds.
2. High speed is used at power-up, for express freezing, and when refrigerator is overloaded.
Standard speeds is used for general purposes.
3. To improve cooling speed, the RPM of the freezer fan motor change from normal speed to high.
4. High speed (2700RPM) : Initial power on or load corresponding operation, express freezing.
Normal speed (2400RPM) : General working conditions.
5. Fan motor stops when refrigerator or freezer door opens.
8-1-5 EXPRESS FREEZING
1. The purpose of this function is to intensify the cooling speed of freezer and to increase the amount of ice.
2. Whenever selection switch is pressed, selection/release, the LED will turn ON or OFF.
3. If there is a power cutage and the refrigerator is power on again, EXPRESS FREEZING function will be canceled.
4. To activate these function, to press the Express Freezing key and the LED will turn ON. This function will remain activated
for 24 hrs. The first three hours the compressor and Freezer Fan will be ON. The next 21 hours the freezer will be
controlled at the lowest temperature. After 24 hours or if the Express Freezing key is pressed again, the freezer will return
to its previous temperature.
5. For the first three hours notice the following cases:
(1) Compressor and freezer fan (HIGH RPM) continuously operate for three hours.
(2) If defrost starts during EXPRESS FREEZING, EXPRESS FREEZING operates for the rest of time after defrost is
completed, when EXPRESS FREEZING operation time is less than 90 minutes.
If EXPRESS FREEZING operates for more than 90 minutes, the EXPRESS FREEZING will operate for two hours
after defrost is completed.
(3) If EXPRESS FREEZING is pressed during defrost, EXPRESS FREEZING LED is on but this function will start seven
minutes after defrost is completed and it shall operate for three hours.
(4) If EXPRESS FREEZING is selected within seven minutes after compressor has stopped, the compressor (compressor
delays seven minutes) shall start after the balance of the delay time.
(5) The fan motor in the freezer compartment runs at high speed during EXPRESS FREEZING .
6. For the rest of the 21 hours, the freezer will be controlled at the lowest temperature.
8-1-6 REFRIGERATOR LAMP AUTO OFF
1. To avoid heat damage caused by the lamp, it is turned off automatically when the refrigerator door is open for more than 7
minutes.
8-1-7 Alarm for Open Door
1. This feature sounds a buzzer when the freezer or refrigerator door is not closed within 1 minute after it is opened.
2. One minute after the door is opened, the buzzer sounds three times each for 1/2 seconds. These tones repeat every 30
seconds.
3. The alarm is cancelled when the freezer or the refrigerator is closed while the buzzer sounds.
Freezer Door
Closed
or Refrigerator
Door
Buzzer
Open Closed Open
Within 1 min.
3 Times 3 Times
30 sec 30 sec
1 min.
- 25 -
Closed
3 Times 3 Times
30 sec