Randall S Pawcatuck , CT October 01, 2014 Appliance: General Electric Refrigerator GTS22KBMARCC Ge Refrigerator Gts22kbmarcc: Freezer very cold and fridge warm. How to replace Refrigerator Defrost Heater. Replaced defrost heater, temperature and defrost limiter thermostat. After taking the cover off the air chiller I found the coils frozen solid and defrosted it with a hair dryer. Once defrosted I remover the heater coil to test it it was fine, then I could see the defrost limiter was broken and as I put the unit back together I broke the heater tube (it is glass) so I ordered all the parts that might be defective and replaced them for less than the charge of having some one come to check it out. 84 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours