I bought this LG refrigerator last year Recently I have experienced the refrigerator is not cooling both top and bottom compartment.Right now, no nore 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 > dispay show number 2.(What does it mean??) Please provide solution.