一台故障热水器不出热水,显示E5故障,只能听到风机声音,没有点火和工作

燃气热水器e5故障图解(燃气热水器E5故障检修)(1)

燃气热水器e5故障图解(燃气热水器E5故障检修)(2)

面板还是很好拆卸的,上沿和下沿各4颗螺丝,用梅花起子拆下,然后拔开黑色连接器

燃气热水器e5故障图解(燃气热水器E5故障检修)(3)

背面有出现故障代码的解释

燃气热水器e5故障图解(燃气热水器E5故障检修)(4)

E5为过热保护

燃气热水器e5故障图解(燃气热水器E5故障检修)(5)

燃气热水器e5故障图解(燃气热水器E5故障检修)(6)

燃气热水器e5故障图解(燃气热水器E5故障检修)(7)

测量发现与温度有关的有两个检测电阻和一个温控开关(92℃)两头,开关进行测量后发现为常闭型

燃气热水器e5故障图解(燃气热水器E5故障检修)(8)

分析后与出水口温度检测电阻和温控开关相关,用模拟法进行测试,断开出水口温度电路后显示E6,断开温控开关后显示E5

燃气热水器e5故障图解(燃气热水器E5故障检修)(9)

燃气热水器e5故障图解(燃气热水器E5故障检修)(10)

断开温控开关后发现与故障一致,看来还是温控开关及线路故障

燃气热水器e5故障图解(燃气热水器E5故障检修)(11)

测量插头后发现有段线路不导通,电阻为∞

燃气热水器e5故障图解(燃气热水器E5故障检修)(12)

取下保护蜡管后发现内部有一个RY 172 220V 10A温度保险丝损坏

燃气热水器e5故障图解(燃气热水器E5故障检修)(13)

燃气热水器e5故障图解(燃气热水器E5故障检修)(14)

将线接通后故障消除

燃气热水器e5故障图解(燃气热水器E5故障检修)(15)

看来还是因为保险丝损坏导致

燃气热水器e5故障图解(燃气热水器E5故障检修)(16)

装上新的温度保险并用热缩管进行保护连接部位,此温度保险最好不要用焊锡进行焊接,需要用铜片之类连接器进行连接

燃气热水器e5故障图解(燃气热水器E5故障检修)(17)

燃气热水器e5故障图解(燃气热水器E5故障检修)(18)

燃气热水器e5故障图解(燃气热水器E5故障检修)(19)

燃气热水器e5故障图解(燃气热水器E5故障检修)(20)

进行连接后测量0.7Ω

燃气热水器e5故障图解(燃气热水器E5故障检修)(21)

燃气热水器e5故障图解(燃气热水器E5故障检修)(22)

燃气热水器e5故障图解(燃气热水器E5故障检修)(23)

燃气热水器e5故障图解(燃气热水器E5故障检修)(24)

燃气热水器e5故障图解(燃气热水器E5故障检修)(25)

固定好蜡管盖上面板ok

燃气热水器e5故障图解(燃气热水器E5故障检修)(26)

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