中文
含义
洗衣机输入电源电压过高。E8 表示洗衣机电源检测电路测量到交流输入电压超过 ~265V 的安全上限。为防止主板和电机驱动电路因过压损坏，系统触发保护并停止运行。
常见原因
- 电网电压异常偏高，三相四线制系统中零线断路导致单相电压升至 380V。
- 小区配电变压器档位设置不当，输出电压偏高。
- 使用发电机供电时电压调节器失灵，输出过高。
- 洗衣机主板电压检测电路元件参数漂移，误报过压。
- 雷击导致电网瞬时电压尖峰，尽管持续时间短但被检测电路捕获。
- 同一线路上有大功率感性负载启停（如大电机、电焊机）产生瞬态过电压。
自助排查
- 用万用表交流电压档测量洗衣机插座的电压——正常应在 198V–242V（220V±10%）之间。若持续超过 260V 说明供电异常。
- 尝试将洗衣机插到家中其他插座（不同回路）测试，排除局部线路问题。
- 询问邻居是否也遇到电器异常——若普遍电压偏高，联系供电公司调整变压器档位。
- 如果电压正常但洗衣机仍报 E8，可能是主板电压检测电路故障，联系 TCL 售后检修主板。
- 在电压不稳定的地区，建议为洗衣机加装自动稳压器（AVR）以保护电器。
English
Meaning
The input supply voltage is too high. E8 indicates the washer’s voltage detection circuit has measured the AC input voltage exceeding the ~265V safety upper limit. To prevent overvoltage damage to the main board and motor drive circuits, the system triggers protection and stops operation.
Common Causes
- Abnormally high grid voltage — in a three-phase four-wire system, a broken neutral line can cause a single phase to rise to 380V.
- Improperly set distribution transformer taps in the residential area, causing high output voltage.
- When powered by a generator, the voltage regulator has malfunctioned, producing excessive output.
- Component parameter drift in the washer main board’s voltage detection circuit, falsely reporting overvoltage.
- Lightning strike causing a momentary grid voltage spike; though brief, it is captured by the detection circuit.
- High-power inductive loads on the same circuit (e.g., large motors, welders) starting or stopping, producing transient overvoltage.
Self-Check Steps
- Use a multimeter in AC voltage mode to measure the outlet voltage — normal is 198V–242V (220V±10%). A sustained reading above 260V indicates an abnormal supply.
- Try plugging the washer into a different outlet (on a different circuit) to rule out local wiring issues.
- Ask neighbors whether they are also experiencing electrical appliance anomalies — if voltage is high across the area, contact the power utility to adjust the transformer tap.
- If voltage is normal but the washer still reports E8, the main board’s voltage detection circuit may be faulty. Contact TCL after-sales for main board inspection.
- In areas with unstable voltage, consider adding an Automatic Voltage Regulator (AVR) to protect the washer.