Why Would a Split AC Compressor Run Continuously but Not Cool at All?

When a split AC compressor runs continuously but fails to cool, it usually indicates a specific problem within the system. Here are the common reasons:

  • Refrigerant Leak: A refrigerant leak can cause a drop in coolant levels, leading to insufficient cooling.
  • Frozen Evaporator Coil: If the evaporator coil becomes iced over, airflow will be obstructed, and cooling will be affected.
  • Dirty Coil: A dirty condenser or evaporator coil can reduce heat exchange efficiency, resulting in poor cooling.
  • Electrical Faults: Wiring or circuit board issues can prevent the compressor from receiving adequate power.
  • Faulty Compressor: In rare cases, the compressor itself may be malfunctioning, causing it to run continuously without cooling.
  1. Can a dirty filter cause my AC to not cool? Yes, a clogged filter can restrict airflow.
  2. Why does my AC compressor run but not cool at night? Nighttime temperature changes can impact refrigerant flow.
  3. How do I know if there is a refrigerant leak? Look for signs of oil or dye around the unit.
  4. What causes a frozen evaporator coil? Low refrigerant levels or dirty coils can lead to iced-over coils.
  5. Is it safe to turn off my AC if the compressor is running continuously? Yes, but it is recommended to call a technician to diagnose the issue.
  • Daikin Split AC
  • LG Split AC
  • Mitsubishi Electric Split AC
  • Carrier Split AC
  • Fujitsu Split AC

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