I think I have replaced the heaters in this unit five times over the years. Bought the unit new and had the first set replaced under warranty.
Before I replace them again, I want to ask if there is a heavier duty part, or do you think I may have another problem to look at? Thanks!
Answer Hello Bob,
You may want to replace the defrost thermostat WR50X122 when you replace the defrost heater. The defrost thermostat turns off the heating element when it reaches about 50°F in the evaporator compartment. If it never opens and turns off the heating element, the heating element tends to burn out prematurely because it stays on until the defrost control, (timer or board), cycles out of the defrost cycle. Be aware that the defrost heater is the most common part to fail on this design.
How do I install this part?
Answer Hello Carlos. The defrost heater is located inside the freezer behind the freezer wall on the evaporator coils. It is held onto the coils with screws and connected with wires. You will remove the screws and pull the wires out of the foam retainers beside the evaporator, to replace the heater. Reinstall in reverse order.