中文
含义
CH11 表示直流母线电压超过安全峰值，可能损坏变频器组件。
常见原因
- 输入电源电压过高或不稳定。
- 直流母线电容器损坏或老化。
- 变频板整流或PFC电路故障。
- 电网用电峰值导致电压冲击。
自助排查
- 立即停止使用空调，拔掉电源。
- 检查家庭电压是否正常（220V±10%），使用稳压器可改善。
- 如电压正常仍报CH11，需联系LG售后检查变频板。
English
Meaning
CH11 indicates the DC link voltage has exceeded its peak limit, which may damage the inverter components.
Common Causes
- Input AC power voltage is too high or unstable.
- DC link capacitor failed or aged.
- Inverter PCB rectifier or PFC circuit fault.
- Mains power surge event.
Self-Check Steps
- Stop using the AC immediately and unplug it.
- Check that the household voltage is normal (220V ± 10%). A voltage stabilizer may help.
- If voltage is normal but CH11 persists, contact LG service to inspect the inverter PCB.