Fixing an air conditioner that keeps turning off requires a systematic approach to troubleshoot potential airflow restrictions, electrical failures, and drainage problems. Begin by turning off the system and inspecting your indoor air filter; if it is dirty or clogged, replace it immediately to restore proper airflow and prevent evaporator coil freezing. Second, check the condensate drain line to ensure water is draining freely and has not pooled in the overflow pan, which triggers safety float switches. Third, examine the outdoor condenser unit to make sure leaves and dirt are not blocking airflow. If the system continues to shut off after addressing these DIY items, call a professional HVAC technician to test electrical parts like capacitors, check contactors, and measure refrigerant levels for leaks.
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