To provide control for enhancing temperature stability of both storage chambers as much as possible even in the situation where cooling of the storage chambers reaches predetermined limit time.

In this method for controlling the refrigerator for switching to mode for letting refrigerant flow into a cooling device 10 for an icebox when temperature of corresponding chillroom does not reach an off point until predetermined limit time even when letting refrigerant flow into a cooling device 7 in a chillroom for cooling, the predetermined limit time of the chillroom is prolonged when the situation where temperature of the chillroom does not reach the off point occurs continuously for several times and temperature in the chillroom in the predetermined limit time remains substantially the same in cooling of the chillroom.