Michael C Alton , IL August 20, 2019 Appliance: Roper Refrigerator RT18AKXKQ01 Roper Refrigerator Rt18akxkq01: Refrigerator tripped the gfi every time it went into the defrost cycle. How to replace Defrost Heater. I replaced the defrost heating element. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes