Diagnostics
Checked the system and identified that error code 40 indicates an issue with the defrost system.
Inspected the evaporator coil and found significant frost buildup, which was restricting airflow and reducing the freezer’s cooling efficiency.
Tested the defrost components, including the defrost heater, thermostat, and control board, to pinpoint the issue.
Solution
Defrosted the evaporator coil to restore proper airflow.
Conducted a full diagnostic of the defrost system to ensure all components were functioning correctly.
Confirmed that the refrigerator and freezer were reaching the optimal temperatures.
Result
The refrigerator and freezer were restored to full working order, with the error code cleared and proper cooling achieved. The homeowner appreciated the thorough diagnostics and quick defrosting service, ensuring their frozen items stayed safe.
Customer Feedback
Excellent service! The technician was professional, explained the issue clearly, and resolved it quickly. My freezer is back to working perfectly, and I couldn’t be happier. Highly recommend for Sub-Zero repairs!
Problem
A homeowner, Vince C., in Manhattan contacted us about their Sub-Zero refrigerator. The freezer wasn’t maintaining the proper temperature, and an error code 40 appeared on the display. The client was concerned about potential food spoilage and needed a quick solution.
Location of client
