I inspected the built-in KitchenAid refrigerator and found the service light was illuminated, indicating a need for maintenance. I began by unplugging the refrigerator to ensure safety. Next, I removed the back panel to access the coils. Dust and debris had accumulated on the coils, which I carefully cleaned using a vacuum cleaner and a soft brush. I also checked the condenser fan to ensure it was functioning properly. After cleaning, I reassembled the refrigerator and plugged it back in. The service light turned off, confirming the issue was resolved. The refrigerator is now operating efficiently.