James S Rimrock , AZ February 13, 2016 Appliance: Whirlpool Refrigerator GT1SHWXPT00 Whirlpool Refrigerator Gt1shwxpt00: Water dispenser in whirlpool stopped working. How to replace Water Inlet Valve. I replaced the solenoid valve and I had to lower the temperature in the refrigerator because the line was frozen. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes