How do I turn off the change filter light on my fridge? It has a button for water,cube, crush, light, and lock.

I have an LG side by side fridge/freezer model GR-L206CVQA.
The display panel locks up and I cannot change the dispenser

ice dispencer does not dispense cube or crush ice. Water comes out, lights work. it is not deactivated.

Yes , replace the main board . Part number WR55X10656 . There is only partial communication between the main board and the dispensor board . This main board , is behind the 8 " X 10 " panel , on the back of the refrig . Do not replace the dispensor board . I have never come across a bad dispensor board yet . Always a first time though .

press the light switch button inside of the refrigerator five times.

Ice cubes freeze from the outside, so the center of the cube is the last to freeze. Ice is pure water, only H 2 O, so as the ice cube freezes, all of the dissolved minerals are pushed to the center. Near the end of the freezing, there isn't much water left in the center of the cube, so these minerals become very concentrated, and they form the "white stuff" – the technical name is precipitate. The hardness minerals that cause the "white stuff" are not toxic.

Question:
I have replaced filter but how do you reset change filter light?
Have replaced the filter. The light is still red. Answer: After changing the water filter, press Cubed and Crushed buttons simultaneously and hold 3 seconds.

Press and hold the lock and light buttons (lock and water on newer fridges) on the dispenser for about 4 seconds, until the indicator light blinks

We had thought this was a free service...??? Yes, we fixed it ourselves, after trial and error. We pulled out the ice bin and there is an arm that is moves back and forth beside it. It had frozen up. That is the ice crusher. Thaw it out and it is fixed. By the way, the above posting was not by us--ours stated that our ice crusher did not crush ice anymore. Instead, cubes came out...

Check the following:

Is the freezer door closed completely?

Is the ice storage bin installed correctly?

Is there ice in the storage bin?

Has the ice frozen in the storage bin?

Is ice stuck in the delivery chute?

Has the wrong ice been added to the storage bin? Use only
cubes produced by the current ice maker.

Has the ice melted around the auger (metal spiral) in the
ice bucket? Dump the ice cubes and clean the ice storage
bin.

Is the ice dispenser stalling while dispensing “crushed”
ice? Change the ice button from “crushed” to “cubed.” If
cubed ice dispenses correctly, depress the button for
“crushed” ice and begin dispensing again.

Has the dispenser arm been held in too long? Ice will stop
dispensing when the arm is held in too long. Wait 3 minutes
for dispenser motor to reset before using again.

The ON/OFF switch is located on the top right side of the freezer
compartment.
To turn the ice maker on, slide the control to the ON (left) position.
To manually turn the ice maker off, slide the control to the OFF
(right) position.
NOTE: Your ice maker has an automatic shutoff. The ice maker
sensors will automatically stop ice production, but the control will
remain in the ON (left) position

REMEMBER:

Allow 24 hours to produce the first batch of ice. Discard the
first three batches of ice produced.

The quality of your ice will be only as good as the quality of the
water supplied to your ice maker. Avoid connecting the ice
maker to a softened water supply. Water softener chemicals
(such as salt) can damage parts of the ice maker and lead to
poor quality ice. If a softened water supply cannot be avoided,
make sure the water softener is operating properly and is well
maintained

The Dispenser Lock (on some models)
Your dispenser can be turned off for easy cleaning or to prevent
unintentional dispensing by small children and pets.
NOTE: The lock feature does not shut off power to the product, to
the ice maker, or to the dispenser light. It simply deactivates the
dispenser levers. The ice and water dispensers will not work.
Style 1: Press the LOCK BUTTON to lock the dispenser. Press the
UNLOCK button to unlock the dispenser.
Style 2: Press and hold the LOCK OUT button to lock the
dispenser. Press and hold the LOCK OUT button a second time to
unlock the dispenser.

http://www.ajmadison.com/ajmadison/itemdocs/2261717.pdf

sound like a bad(shorted) dispenser user interface INTERFACE DISP ASM WR55X10415