My Smeg fridge is locked in control lock mode. The L L L code is on the digital panel. Per the manual instructions you can hold down the alarm button for 3 seconds and they will unlock, but that’s not working. It beeps once then nothing. It just stays on L L L at all times, not solely when you press buttons. This is my first time plugging in the fridge and setting it up. I had followed instructions for first time use, and accidentally locked the controls. Thanks for any help! Been trying to find the answer for an hour.