E5 - 海信 冰箱

中文

含义

E5 为化霜加热器回路开路或热熔断器断开。化霜加热器用于融化蒸发器上的结冰，回路故障会导致蒸发器冰堵，严重影响制冷效果。

常见原因

1. 化霜加热管烧断
2. 温度保险丝（热熔断器）熔断
3. 控制板上化霜继电器失效
4. 化霜回路线束烧熔

自助排查

1. 判断冰箱是否长期制冷不足且冷冻室后壁严重结冰，如是要检查化霜系统。
2. 断电后拆开冷冻室后盖板，目视检查化霜加热管外观是否烧断。
3. 用万用表测量加热管阻值，几百欧为正常，无穷大说明烧断。
4. 测量温度保险丝通断，断开说明已熔断需更换。
5. 化霜加热器更换涉及強电，建议联系海信售后专业处理。

English

Meaning

Defrost heater circuit open or safety thermal fuse blown. The defrost heater melts ice buildup on the evaporator. A circuit fault leads to evaporator ice blockage.

Common Causes

1. Defrost heater element burned out
2. Thermal fuse (thermal cutout) blown
3. Defrost relay on control board failed
4. Defrost circuit wiring harness melted

Self-Check Steps

1. Check whether the refrigerator has been cooling poorly for a long time with heavy ice buildup on the freezer rear wall; if so, inspect the defrost system.
2. Power off, remove the freezer rear cover, and visually inspect the defrost heater for signs of burnout.
3. Use a multimeter to measure the heater resistance; several hundred ohms is normal, infinite indicates burnout.
4. Check the thermal fuse continuity; an open circuit means it has blown and needs replacement.
5. Defrost heater replacement involves mains voltage; contact Hisense service for professional handling.