If your AC aircon inverter's compressor stops automatically, but the indoor unit continues to run, and the air coming out is not cold, there could be several potential issues causing this problem. Some common reasons for this situation include:
Refrigerant leak: A refrigerant leak can lead to a drop in the refrigerant level, causing the system to lose its ability to cool effectively. When the refrigerant charge is insufficient, the compressor might shut off as a safety measure to prevent damage. Low refrigerant levels need to be addressed promptly by a professional technician, who can locate the leak, repair it, and recharge the system with the correct amount of refrigerant.
Faulty compressor: The compressor is the heart of the AC system, and if it becomes faulty or fails, it won't be able to compress the refrigerant, leading to a lack of cooling. The indoor unit may continue to run, but without the compressor functioning correctly, the air won't be cooled. Replacing a faulty compressor is a significant repair that should be done by a qualified HVAC technician.
Inverter board issues: The inverter board in an AC aircon inverter regulates the speed of the compressor motor. If there's a problem with the inverter board, the compressor may not operate at the right speed or stop functioning altogether, leading to cooling problems. An HVAC technician can diagnose and repair issues related to the inverter board.
Dirty or blocked components: Dust and debris can accumulate on the evaporator coils or air filters, reducing the unit's ability to cool efficiently. This can cause the compressor to shut off prematurely. Regular maintenance, including cleaning or replacing filters and cleaning the coils, is essential to ensure proper cooling performance.
Electrical issues: Electrical problems, such as faulty wiring or sensor malfunctions, can also lead to improper functioning of the AC aircon inverter. These issues can affect the compressor's operation and overall cooling performance.
Overheating: If the AC aircon inverter's compressor is overheating due to a lack of proper ventilation or airflow, it may shut off as a safety measure. Ensure that there is adequate clearance around the outdoor unit and that the outdoor coil is clean.
Since diagnosing and repairing AC inverter issues can be complex and potentially involve electrical components, it's best to seek the assistance of a licensed HVAC technician. They have the expertise and tools to identify the specific problem and perform the necessary repairs to restore your AC to its optimal working condition.