中文
含义
电机电压异常，检测到过压或欠压状态。
常见原因
供电电压不稳定超出电机工作范围、控制板电压检测电路故障、电源线接触不良导致压降过大。
自助排查
- 用万用表测量插座电压（120V/240V ±10%）。2. 检查电源线及插头是否损坏。3. 断电后重新插拔控制板连接器。4. 如电压正常则需更换控制板。
English
Meaning
Abnormal motor voltage detected — overvoltage or undervoltage condition.
Common Causes
Unstable line voltage outside motor operating range, faulty voltage sensing circuit on control board, or excessive voltage drop from poor power connections.
Self-Check Steps
- Measure outlet voltage (120V/240V ±10%) with multimeter. 2. Inspect power cord and plug for damage. 3. Reconnect control board connectors after power off. 4. Replace control board if line voltage is correct.