中文
含义
洗衣机电机可控硅（Triac）短路，电机驱动电路故障。
常见原因
- 电机可控硅（Triac）击穿短路
- 电机驱动板光耦隔离损坏
- 电机控制电路短路
- 主控板电机驱动输出故障
自助排查
- 断开电机测量可控硅各脚电阻
- 检查电机驱动板有无明显烧灼痕迹
- 测量光耦隔离器件是否正常
- 更换电机驱动板测试
- 检查主控板驱动信号波形
English
Meaning
The washer motor triac is short-circuited; motor drive circuit fault.
Common Causes
- Motor triac short circuit breakdown
- Motor driver board optocoupler damaged
- Motor control circuit shorted
- Main board motor drive output fault
Self-Check Steps
- Disconnect motor and measure triac terminal resistance
- Inspect motor driver board for burn marks
- Check optocoupler isolation components
- Replace motor driver board for testing
- Check main board drive signal waveform