室外热交换器入口这一管段上有霜而其它部分干燥，表明毛细管已半堵。从表面看，制冷剂不足和半堵塞的现象是一致的。还需指出，空调器
运转时，一般应先看一看空调器的外部工作条件，例如室内、外环境温度是否过高或过低，过滤网是否太脏或有无通风不良等现象，以便排除
外部原因及安装使用不当等因素。
The outdoor heat exchanger inlet has a frost on the pipe section and the other part is dry, indicating that the capillary is half blocked. On the surface, the phenomenon of insufficient refrigerant and semi-blocking is consistent. Also need to point out that the air conditioner
During operation, generally look at the external working conditions of the air conditioner, such as whether the indoor and outdoor ambient temperature is too high or too low, whether the filter is too dirty or has poor ventilation, so as to eliminate
External causes and improper installation and other factors.