Finding that your residential refrigerator has grown warm inside can be caused by several common mechanical, environmental, or airflow obstructions. The most frequent cause is thick dust and pet hair buildup on the exterior condenser coils beneath or behind the unit, which acts as an insulation blanket and prevents heat rejection. Other common culprits include frosted-over evaporator coils hidden behind the freezer back panel due to a broken defrost heater, a failed evaporator fan motor that stops circulating chilled air, or worn-out rubber door gaskets letting warm air seep inside continuously. You can troubleshoot by inspecting condenser coils and door seals. You can verify that your troubleshooting is successful when cleaning coils, defrosting iced evaporator coils, or replacing faulty fan motors restores stable, cold storage temperatures.
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