tried pressing freezer light and fridge light icons for 3 seconds, aftet than the OF is frozen on the display panel and won't allow other icons to...

HI, my name is Abe. I am happy to assist you. I'm sorry your having trouble resolving the broblem but dont worry, I will be providing some steps that will resolve this issue. Please give me a few minutes to prepare the answers. Thank you for your patience.

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Hi again thank you for patiently waiting and sorry for the delay.

If the control panel displays "OF OF" instead of the temperature, the refrigerator is in "Cooling Off" mode. In Cooling Off mode, the refrigerator appears to be running normally, but the compressor is off so the unit does not cool. Cooling Off mode is used by retailers to save energy when the refrigerator is on the showroom floor.

Note: Cooling Off mode is also called Demo mode or Exhibition mode.

Disable Cooling Off mode by performing the following:

Left Door: Simultaneously press and hold the top two buttons on the left side of the display panel until you hear a distinctively different chime sound when the display changes. This will either be a combination of "Energy Saver" and "Freezer", or "Energy Saver" and "Power Freeze/Freezer."

At the top of the door frame: Simultaneously press and hold the "Power Freeze" and "Freezer" buttons until you hear a distinctively different chime sound and the temperatures for the fridge and freezer are both displayed.

Note: If the temperature is displayed, but then "OF OF" reappears a few seconds later, Cooling Off mode was not disabled. Repeat the actions above, and be sure to press and hold the buttons at the exact same time until the distinctive chime sound is heard and both temperatures are displayed.

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Thank you for the information. What we usually do in cases like these is to unplug the refrigerator for 10 minutes and plug it in again to the power outlet. This usually resolves the problem but in some cases:

Check the display and let me know what it says so that I could check and do some research about it. Thank you.

That is correct this is resetting the entire unit to be able to set to default and start working again fresh. Most of these issues start from power changes and surges. This is what I usually do with my unit when encountering this issue.