2017年长安欧诺空调不工作
<p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;">故障现象：2017年长安欧诺，排量1.5L， 空调不工作，车主说在别的修理厂维修多次均未排除故障。</p><p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;"><img decoding="async" src="https://wapq.cn/wp-content/uploads/2025/03/20250305120545928-IMG_2744-1024x485.png" alt="20250305120545928-IMG_2744" data-edit-file-id="260" data-full-url="https://wapq.cn/wp-content/uploads/2025/03/20250305120545928-IMG_2744.png" imgbox-index="0" style="box-sizing: border-box; outline: 0px !important; border: 0px; vertical-align: middle; max-width: 100%; max-height: 100%; height: auto; display: block; margin: auto;"></p><p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;">维修过程：接车后，启动车辆开空调，空调面板A、C灯点亮，但没有听到压缩机离合器吸合的声音。先按常规检查保险丝、空调继电器、空调压力开关等均正常。短接空调继电器，压缩机工作，风扇转，有冷风出，说明有冷媒，没空调控制信号到压缩机。打开空调开关，就会向发动机电脑提供一个空调开启请求信号，发动机电脑收集相关传感器信号，判断在合理的情况下控制空调继电器闭合，空调压缩机才工作。检查室外温度传感器，电压在2.4伏左右，在合理范围内。当用诊断仪读取蒸发箱温度传感器数值时，发现异常，正常的空调系统工作电压应为电瓶电压，启动后应在十三到十四伏之间，数据流显示系统电压为11.6伏，明显偏低，用万用表检测系统电压，检测的结果与数据流显示的一致。</p><p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;"><img decoding="async" src="https://wapq.cn/wp-content/uploads/2025/03/20250305120547321-IMG_2745-1024x576.jpeg" alt="20250305120547321-IMG_2745" data-edit-file-id="261" data-full-url="https://wapq.cn/wp-content/uploads/2025/03/20250305120547321-IMG_2745.jpeg" imgbox-index="1" style="box-sizing: border-box; outline: 0px !important; border: 0px; vertical-align: middle; max-width: 100%; max-height: 100%; height: auto; display: block; margin: auto;"></p><p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;">接下来检查电路连接、蓄电池及充电系统，发现发电机电源线头烧蚀，通往蓄电池的电源线烧黑了，于是判断故障原因为是发电机发电量过高，或者是发电机输出接线柱接触不良，从而导致电源线烧蚀。</p><p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;"><img decoding="async" src="https://wapq.cn/wp-content/uploads/2025/03/20250305120544797-IMG_2746-1024x576.jpeg" alt="20250305120544797-IMG_2746" data-edit-file-id="258" data-full-url="https://wapq.cn/wp-content/uploads/2025/03/20250305120544797-IMG_2746.jpeg" imgbox-index="2" style="box-sizing: border-box; outline: 0px !important; border: 0px; vertical-align: middle; max-width: 100%; max-height: 100%; height: auto; display: block; margin: auto;"></p><p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;">故障排除：更换发电机及电源线，空调可以正常工作，读取数据流，蓄电池电压处在正常范围。</p><p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;"><img decoding="async" src="https://wapq.cn/wp-content/uploads/2025/03/20250305120544159-IMG_2747-1024x576.jpeg" alt="20250305120544159-IMG_2747" data-edit-file-id="259" data-full-url="https://wapq.cn/wp-content/uploads/2025/03/20250305120544159-IMG_2747.jpeg" imgbox-index="3" style="box-sizing: border-box; outline: 0px !important; border: 0px; vertical-align: middle; max-width: 100%; max-height: 100%; height: auto; display: block; margin: auto;"></p><p style="box-sizing: border-box; margin-bottom: 20px; color: rgb(78, 83, 88); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px; outline: 0px !important;">心得总结：蓄电池电压过低为什么会空调不工作了，于是向曹老师请教，他说当发动机电脑检测到电池电压过低，就会切短空调的工作，以保证发动机正常工作，这让我联想到发动机水温高也会使空调不工作。其实这还真不能算疑难杂症，估计我要是不细心，我也会绕晕，只能说技术不断更新，我们的思维也要赶上，同时，还要从大局观看问题，单个系统的控制策略与整体控制策略存在一定的关系。千万不要忽视小细节，</p><p></p>
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