Sy Ef on a Frigidaire refrigerator stands for “system error.” It indicates that there is a malfunction or problem with the refrigerator’s internal systems. Refrigerator owners should contact Frigidaire customer service for further assistance in diagnosing and fixing the issue. Introduction (124 words): The Frigidaire refrigerator is a popular appliance used in households around the … Continue reading What Does Sy Ef Mean on Frigidaire Refrigerator?