How do I lock the controls to prevent accidental changes?
Press and hold the Control Lock button for 3 seconds to enable Control Lock. The Lock indicator will turn on and all controls will be disabled. When Control Lock is on, the refrigerator will not dispense ice or water even if the Dispenser Lever is pressed. To deactivate, press and hold Control Lock again for 3 seconds.
From the official Samsung DRS425300SR French Door Refrigerator manual, page 22
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