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请教各位：

        直流变频3级能效空调在阴雨高湿环境下，首次开机报通讯故障，从而导致内
外板之间无法通讯。
故障描述：只能发射信号但接收不到内板的通讯信号，输出信号为低电平，室内机接
收到的室外发的
通信信号存在畸变，连续4分钟后，报出室内外通信故障。初步分析原因为控制板上保
护涂层失效，使
控制板上存在漏电流，以致信号变弱。
         现请教电脑控制板涂覆层（例如灌封胶、1501硅胶、UV胶等）的检测标
准，迅速有效。

         另，请教各位IEC、UL、JIS最新标准目录，谢谢！


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