Red Seal Appliance Service Technician Practice Exam

When a refrigerator is not cooling effectively, checking the defrost timer and door seals is essential because these components can directly impact the appliance's ability to maintain the proper temperature. The defrost timer controls the periodic defrost cycle of the fridge, which helps prevent frost buildup on the evaporator coils. If the timer is faulty or not functioning correctly, frost can accumulate, blocking airflow and reducing cooling efficiency. This can lead to inadequate refrigeration and temperature inconsistencies. Similarly, the door seals, or gaskets, are crucial for maintaining an airtight environment inside the refrigerator. If the seals are damaged, worn, or not sealing properly, it allows warm air to enter the refrigerator, making it harder for the appliance to maintain cool temperatures. This can result in increased energy consumption and potential spoilage of food. Considering these factors, checking the defrost timer and door seals provides insight into the cooling issues and can lead to effective troubleshooting and repair.