How do I activate the Control Lock to prevent accidental button presses?
Press and hold the Lock button for 3 seconds or more to activate the Control Lock function, and the Lock icon will display. To disable the Lock function, press and hold the Lock button for approximately 3 seconds again. When power is initially connected to the refrigerator, the Lock function is off by default. (Page 15)
From the official LG Refrigerator manual, page 15
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