The present invention relates to a method for controlling a step valve according to outdoor temperature, which is capable of allowing a refrigerant to flow into only a powered storage room by controlling the step valve when the outdoor temperature is low in the case of stopping the start of the compressor of a kimchi refrigerator, thereby maintaining a balanced pressure. According to the present invention, a method for controlling a step valve according to outdoor temperature is capable of maximizing consumer satisfaction by improving the reliability of a product because comprising: a step of allowing a control part to receive the outdoor temperature measured through an outdoor temperature sensor when the start of a compressor is stopped and a step of allowing the control part to make a refrigerant flow into a storage room by controlling a step valve according to the measured outdoor temperature.COPYRIGHT KIPO 2015본 발명은 김치냉장고의 압축기 기동 정지시 외기온도가 낮은 경우, 스텝밸브를 제어하여 전원이 온된 저장실로만 냉매가 유입되도록 하여 평압이 유지되도록 하는 외기온도에 따른 스텝밸브 제어방법에 관한 것으로써, 제어부가 압축기 기동이 정지되면, 외기온도센서를 통해 측정된 외기온도를 입력받는 단계 및 상기 측정된 외기온도에 따라 스텝밸브를 제어하여 저장실로 냉매를 유입시키는 단계 를 포함하는 것을 특징으로 하여 제품 신뢰도를 향상시켜 소비자 만족도를 극대화 시킬 수 있다.
