I bought this LG refrigerator last year  Recently I have experienced the refrigerator is not cooling both top and bottom compartment. Right now, no more warm outside the fridge. This refrigerator is fix with built in diagnostic capabality. I'm try open the microcontroller cover and push self diagnose button the result is:-

1) push first times > all display flashed.

2) push second times > display show number 2.(What does it mean??)  Please provide solution.