有風但不冷Airflow but no cooling
先確認冷房模式、設定溫度與風量,再檢查濾網、室內外機氣流及運轉狀態。仍未改善時,才進一步量測溫差、電流與冷媒系統。Confirm cooling mode, temperature and fan settings, then inspect filters, airflow and operating condition before testing temperature difference, current and the refrigerant system.