Its a temperature problem.The temp increases due to internal fan not working.The fan has to be checked.If the fan is running properly then this problem is related to circuit board.The board not controlling the temp.Also press the temp button and see if the beeping stops.Also see if the door is not getting closed.If the door is not getting properly the temperature increases do to outside air entering the refrigerator.------ But if door is getting closed properly and pressing temperature button on the panel is not helping then the fan and the circuit board.This 2 possibilities are to be checked.Any of the one is faulty and causing the problem of 4 beeps. ------------ This should help.Keep updated.Thanks.Helpmech.