中文
含义
CH12 表示输入交流电压超出正常工作范围，空调将停止运行以保护组件。
常见原因
- 市电电压过高或过低。
- 电网不稳定或电压波动。
- 电源线或接线松动或损坏。
- 主控制板电压检测电路损坏。
自助排查
- 拔掉电源，检查电源插座是否有电，电压是否正常。
- 确认空调专用电路开关未跳闸。
- 如电压不稳，请安装稳压器后再使用。
- 如电压正常仍报CH12，需联系专业人员检查控制板。
English
Meaning
CH12 indicates the input AC voltage is out of the normal operating range.
Common Causes
- AC mains voltage is too high or too low.
- Power grid unstable or voltage fluctuations.
- Power cord or wiring connections loose or damaged.
- Main PCB voltage detection circuit failed.
Self-Check Steps
- Unplug the AC and check the power outlet for proper voltage.
- Verify the AC dedicated circuit breaker has not tripped.
- If voltage is unstable, install a voltage stabilizer before using.
- If voltage is normal but CH12 persists, contact a professional to inspect the control board.