1. Power supply: Check to make sure that the outdoor unit is receiving power. Ensure the power cord is correctly plugged into an outlet, and that the circuit breaker or fuse for the air conditioner is not tripped or blown.
2. Refrigerant leak: A refrigerant leak can cause the air conditioner to stop cooling properly. If the refrigerant level is low, the outdoor unit may not be able to generate sufficient cooling power.
3. Compressor failure: The compressor is the heart of the air conditioner and is responsible for compressing the refrigerant. If the compressor fails, the outdoor unit will not be able to cool the air properly.
4. Fan motor failure: The outdoor unit fan motor is responsible for drawing in air and blowing it over the condenser coils. If the fan motor fails, the condenser coils will not be able to dissipate heat, and the air conditioner will not be able to cool properly.
5. Control board failure: The control board is the brain of the air conditioner and is responsible for controlling the operation of the various components. If the control board fails, the outdoor unit will not be able to operate properly.
6. Dirt or debris buildup: Dirt, debris, or leaves can accumulate around the outdoor condenser coils, obstructing the airflow and preventing the unit from cooling efficiently. Ensure the unit is clean and free of any blockages.
If you're not comfortable troubleshooting and fixing the problem yourself, it is recommended to call a professional HVAC technician to inspect the outdoor unit and make the necessary repairs.
