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新热水器显示E3风机故障，检查却是主板坏了，师傅违规修板亏大了
燃气热水器显示故障代码E3，风机故障，师傅检查却是主板坏了，师傅违规修主板，这次亏大了
燃气热水器不启动，没有热水，常见故障维修合集64/113
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