TCL Air Conditioner Outdoor Unit Failure Display There is a specific LED on the power board of the outdoor unit. The LED will keep on lighting if the compressor is running normally but if there are some issues, the LED will start blinking indicating some issues. Fujitsu Air Conditioner Not Blowing Air. If the Fujitsu AC unit is turned on, but no air has been blowing out of the vents, the likely culprit is the fan, capacitor, or compressor. Go outside and check the fan. If it isn’t working, you should still hear a humming sound from the compressor. Solution. Rattling or Clunking Noise. Broken or loose parts; debris rattling around inside the unit. Use a vacuum cleaner with a nozzle attachment or manually open up the air conditioner to remove the debris. Humming Noise. Dirt trapped inside the unit, often on the evaporator coils, which causes a low hum. Here are some of the most common signs that your AC’s blower motor is not functioning properly and will need to be replaced. 1. Weak Airflow. The first and most obvious issue will be if the airflow from your AC through the vents is slow and weak. This means that the blower fan is not functioning to optimal capacity. 2. A mini-split, also known as a ductless mini-split system, is a type of heating and cooling system that consists of an outdoor unit and one or more indoor units. The indoor units are typically wall-mounted and are connected to the outdoor unit via a small conduit that houses the power cable, refrigerant tubing, and condensate drain. Air conditioning compressor issues are often easy to notice. If there’s an issue with your compressor, you might experience one or more of these signs: 1. Your AC Is Making Growling, Screeching, or Clattering Noises. Electrical failures in the compressor will make your AC emit unusual clunking or rattling noises. HK50.

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