快速热水器开机显示e2故障(热水器开机显示E2是什么问题)

快速热水器开机显示e2故障代码，含义为“蒸发器防冻结保护，E4代码含义为压缩机排气管高温保护”，两者均为传感器电路，因此将E2故障和E4故障合并为一章。

E2故障单元电路

E2是蒸发器防冻结保护代码。空调器工作在制冷或抽湿模式下，压缩机运行6min后，CPU通过室内管温传感器检测蒸发器温度，如连续3min≤-5°C时，CPU控制压缩机和室外风机停机，室内风机继续运行，指示灯闪烁并显示E2，不屏蔽按键；当蒸发器温度≥6°C时，且压缩机停机已超过3min，指示灯灭，显示屏恢复正常显示，显示屏恢复正常显示。

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