Frequently Asked Questions
•How do I test the defrost heater with a multimeter?
Disconnect the defrost heater from the wiring harness. Set your multimeter to the ohms setting. Place one probe on each terminal of the heater. A reading close to zero ohms or a specific resistance value (check the service manual) indicates a good heater. An 'OL' or infinite resistance reading signifies a failed heater.
•Where is the defrost drain located, and how do I clear it effectively?
The defrost drain is usually located beneath the evaporator coil in the freezer compartment. After removing the evaporator panel, you should see a small trough or opening. Use hot water poured slowly into the drain to melt ice. A flexible wire or pipe cleaner can help dislodge stubborn debris. Ensure the water drains freely into the drain pan at the bottom of the refrigerator.
•What voltage should I expect to see at the defrost heater during a defrost cycle?
During the defrost cycle, you should expect to see approximately 120V AC at the defrost heater terminals. Use caution when measuring live voltage. Ensure you are using a properly rated multimeter and observing all safety precautions.