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You have to press and hold the button on the side and then press the main button with it. It’s a child proof option. If you want to disable it, use a Phillip head screw driver to side the side button in and turn it clockwise to permanently engage it.
Sorry, there was a problem. Please try again later.Hi there! Thank you for your question about the MSER0990S microwave. If the door is locked and the button isn’t working, it’s possible that the child lock feature is activated. To unlock it, try pressing and holding the button for a few seconds, or consult the user manual for specific instructions. If you continue to experience issues, please send us a private message on Social Media @LGUSSupport, and our team will be glad to assist you. We appreciate your engagement! —Avril
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