Haier Air Conditioner: Both indoor and outdoor units can operate, but the cooling effect is poor.
Analysis and Inspection: Upon inquiry with the user, it was learned that this air conditioner has been installed for nearly 5 years. It had undergone repairs previously due to poor cooling performance. On-site inspection showed no signs of refrigerant leakage. When checking the system pressure with a pressure gauge, the backpressure reduction was slow. Compared with the same model, the cooling effect was poor. By touching the compressor exhaust pipe, it was found that the heat level was insufficient, and the high-pressure pressure was low, indicating a fault in the refrigeration compressor exhaust system.
Repair Method: Replace the compressor with the same model. Following standard procedures, add refrigerant until the pressure reaches 0.5MPa. Afterward, both the cooling and heating functions of the air conditioner returned to normal.
Article Source: Beijing Haier Air Conditioner Repair http://blog.tianya.cn/blogger/blog_main.asp?BlogID=3467495.