E4 - hisense Refrigerator

中文

含义

E4 为化霜温度传感器异常。该传感器安装在蒸发器上，检测化霜过程中的温度变化，用于判定化霜开始和结束时机。

常见原因

1. 化霜传感器热敏电阻开路或短路
2. 传感器未正确固定在蒸发器上
3. 传感器线束被冰层挤压损坏
4. 控制板化霜检测电路异常

自助排查

1. 观察冷冻室后壁是否结厚冰，如结冰严重说明化霜系统异常。
2. 将冰箱断电化霜（至少 4-6 小时）后重新上电，观察是否恢复正常。
3. 检查冷冻室后壁蒸发器附近的化霜传感器是否脱落或损坏。
4. 如传感器损坏，需更换同型号化霜传感器，操作涉及拆卸内胆，建议联系海信售后。

English

Meaning

Defrost temperature sensor (on the evaporator) abnormal. This sensor is mounted on the evaporator and detects temperature changes during the defrost cycle.

Common Causes

1. Defrost sensor thermistor open or short circuit
2. Sensor not properly secured to the evaporator
3. Sensor wiring harness crushed by ice buildup
4. Control board defrost detection circuit abnormal

Self-Check Steps

1. Check whether the rear wall of the freezer is heavily iced up; severe icing indicates a defrost system problem.
2. Power off the refrigerator to defrost (at least 4-6 hours), then power on and check if normal operation resumes.
3. Check whether the defrost sensor near the evaporator on the freezer rear wall has come off or is damaged.
4. If the sensor is damaged, replace with the same type; this involves removing the inner liner, so contact Hisense service.