John for Model Number GSH25JFTC Freezer evaporator keeps building with ice not allowing the refrigerator to cool. I've replaced the defrost sensor twice. Everything works fine for about 2 months then the same thing happens. Could it be the heater?
Answer Hello John, The defrost heater WR51X10055 can be the problem. You can test this with a resistance meter (ohm meter). Be sure when testing that the wires are dis-connected and tap on the heater while the meter is touching the terminals in case the element is broken and touching inside the glass tube. One good indication that the element has failed is that the glass tube will be blackened. Read More... Answered by AppliancePartsPros.com | Wednesday, March 26, 2014