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class="main"> <div class="main_left"> <!--子栏目--> <div style="margin:0 20px;"> <div style="font-size:22px; line-height:40px; text-align:center; margin-top:15px;"><strong>美的空调开机后E9开关门保护故障</strong></div> <div style="font-size:12px; line-height:40px; text-align:center; border-bottom:dotted 1px #ddd;">本篇文章由<strong>维修资料客服</strong>于<strong>2020年01月20日 00点10分00秒</strong>发表， 本文共有<strong>588</strong>个字， <i>浏览：<strong><script src="/plus/count.php?view=yes&aid=10961&mid=1" type='text/javascript' language="javascript"></script></strong>次</i></div> <div style="line-height:22px; width:90%; margin:15px auto; border:dashed 1px #ccc; padding:10px;background:#f8f8f8;">文章导读：故障机型：美的空调KFR-72LW/BP2DY-E故障表现：E9故障维修：滑动门上下停止位置的控制是通过光电开关组件与导轨上的位置机构配合完成的。当开关门处于关闭位置时，导轨上的挡光板遮...</div> <div class="neirong" id=10961> <div id="MyContent"> <p> 故障机型：美的空调KFR-72LW/BP2DY-E</p> <p> 故障表现：E9</p> <p> 故障维修：滑动门上下停止位置的控制是通过光电开关组件与导轨上的位置机构配合完成的。当开关门处于关闭位置时，导轨上的挡光板遮挡住上部光电开关的红外光，使其向主芯片发出指令，确定滑动门的位置。当开关门处于打开位置时，由导轨上的下挡光板遮挡住下光开关的红外光，使其向主芯片反馈开关门位置信号。</p> <p> <img alt="美的空调开机后E9开关门保护故障" src="https://www.ktwxx.com/uploads/allimg/200120/0009561454-0.jpg"></p> <p> 空调上电时两组光电组件均处于导通状态，主芯片就会发出指令驱动电机使门子做上下移动，以确定门的最终位置。只要有一组光电开关有位置信号发出且符合运行状态的要求，主芯片就停止电机的运动使门处于复位位置。</p> <p> 步骤一：上电开机后滑动门在轨道内上下运动无法停止，可以初步判定室内电控板有控制电压输出给电机，且电机无开路、短路故障。</p> <p> 线序</p> <p> 1脚（黄%色）</p> <p> 2脚（黑色）</p> <p> 3脚（红色）</p> <p> 对应功能</p> <p> N零线</p> <p> 开关门打开</p> <p> 开关门关闭</p> <p> 打开时与N线交流电压</p> <p> N零线</p> <p> 220V</p> <p> 265V</p> <p> 关闭时与N线交流电压</p> <p> N零线</p> <p> 265V</p> <p> 220V</p> <p> 步骤二：检验光电开关组件是否良好。将主控板上的光电开关拔掉，分别短接主控板上光电开关插头的第一脚（红色）与第三脚（综色），第二脚(白色)与第四脚（黄%色），模拟光电开光正常工作状态下反馈的信号通电开机，整机运行正常，显示屏开关门保护消除，最终将故障点锁定在光电开关组件上。</p> <p> 更换光电开关组件，通电试机正常。</p> <br /> <p>本文地址：https://www.ktwxx.com/zlxz/10961.html</p> <p><strong>TAG标签： <a href='/tag/dianji_29_1.html'>电机</a> <a href='/tag/guzhang_44_1.html'>故障</a> <a 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