Robert C Goffstown , NH November 20, 2017 Appliance: General Electric Refrigerator HTS22GBMARWW Ge Refrigerator Hts22gbmarww: Refrigerator iced up. How to replace Refrigerator Defrost Heater. Replaced new defrost limiter thermostat and defrost heater. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes