LG LSC27990TT Service Manual page 12

MICOM FUNCTION
2-1-3. Lock function
1. If desiring to lock the dislay the dispenser and control panel, push on
Lock icon is appeared at the right of display with lock status.
2. The buzzer sound and control panel and dispenser function is not performed even if pressing display button other than
lock key in the lock status.
3. If desiring to release the lock status and pressing the lock button more than 3 seconds. Lock icon is disappeared at the
right of display with the lock release status.
2-1-4. Filter condition display function
1. There is a replacement indicator light for the water filter cartridge on the dispenser.
2. Water filter needs replacement once six months.
3. You will see a reminder pop-up window in the LCD screen 2 weeks before / 1 week before / due date to replace the filter
to notify you that the filter needs to be replaced.
4. If you want to reset the filter,use the Menu
LED
¡ Refrigerator ¡ Filter Reset menu.
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button more than 3 seconds.