Gary H Amity , OR January 08, 2025 Appliance: Samsung Refrigerator RF28K9380SG/AA-00 Samsung Refrigerator Rf28k9380sg/Aa-00: Slow water dispensing and slow shut off. How to replace Water Filter Case Assembly. Replaced water filter filter case assembly Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes