10 Reasons Why Your Window Split AC Is Not Cooling but It’s Running

  1. Low Refrigerant Levels:

    • Low refrigerant levels are a common culprit when your window split AC is running but fails to cool adequately. A refrigerant leak or insufficient charge can impede the cooling process, causing the fan to operate without delivering the desired chill. Engage a professional technician to identify and address any refrigerant-related issues.

    Dirty or Clogged Air Filters:

    • Air filters play a crucial role in maintaining the efficiency of your AC unit. Over time, these filters accumulate dust and debris, restricting airflow and reducing cooling capacity. Regularly cleaning or replacing the air filters is a simple yet effective solution to ensure proper cooling.

    Faulty Thermostat:

    • The thermostat regulates your AC’s temperature settings. A malfunctioning thermostat can lead to inaccurate temperature readings, causing the fan to run while the cooling function remains inactive. Verify and recalibrate the thermostat settings to ensure it accurately detects the room temperature.

    Issues with the Evaporator Coil:

    • The evaporator coil is responsible for absorbing heat from the air. If it becomes dirty or frozen, it hampers the coil’s ability to absorb heat efficiently, resulting in inadequate cooling. Regular maintenance, including cleaning the evaporator coil, is essential for optimal performance.

    Malfunctioning Capacitor:

    • The capacitor initiates the compressor and fan motor. If the capacitor is faulty, the fan may continue running while the cooling mechanism remains inactive. Due to the electrical nature of capacitors, seek professional assistance to diagnose and replace any malfunctioning components.

    Compressor Problems:

    • The compressor is the heart of your AC system, circulating refrigerant to facilitate the cooling process. If the compressor is malfunctioning or has failed, the fan may operate independently of the cooling function. Professional inspection and potential compressor replacement are necessary to restore proper functionality.

    Inadequate Insulation:

    • Insufficient insulation in your home can lead to cool air escaping and warm air infiltrating, undermining your AC’s efforts. Proper insulation ensures that the cooled air stays inside, maintaining a comfortable indoor temperature. Consider enhancing insulation in key areas to optimize cooling efficiency.

    Undersized AC Unit:

    • An air conditioner that is too small for the space it’s meant to cool will struggle to maintain the desired temperature. Even with a running fan, an undersized AC may fall short of providing effective cooling. Assess the appropriate size for your space and consider upgrading your unit if necessary.

    Ductwork Issues:

    • Leaks, blockages, or poor insulation in the ducts can compromise the delivery of cool air throughout your home. A functioning fan may not compensate for ductwork problems, leading to uneven cooling. Schedule a professional ductwork inspection to identify and rectify any issues.

    Electronic Control Board Malfunctions:

    • Modern AC units feature electronic control boards that regulate various functions. Malfunctions in these boards can disrupt the coordination between the fan and cooling components. If all else fails, a thorough inspection of the control board and potential replacement may be necessary.

    In conclusion, when your window split AC is running but not cooling, a systematic approach to troubleshooting is crucial. Regular maintenance, timely professional inspections, and addressing specific components can help identify and resolve the issues, ensuring your AC unit operates at peak efficiency.

     

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