Howard K Gibsonia , PA August 30, 2014 Appliance: Whirlpool Refrigerator WRT771RWYB01 Whirlpool Refrigerator Wrt771rwyb01 / : Ice maker supply tube freezing. How to replace Water Inlet Valve Assembly (Refrigerator). Replaced the water inlet valve. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes