Description
用指示灯指示设备正常运行和故障情况，当设备启动时指示灯以1Hz的频率闪烁,正常运行时对应指示灯常亮，当该设备运行有故障时故障指示灯常亮。为防止指示灯灯泡损坏不能正确反映设备工作情况，专门设置了故障测试按钮，系统运行任何时间持续按任何按钮3s
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