中文
含义
室内机主控板 EEPROM 芯片读写故障，系统无法正常读取运行参数。
常见原因
- EEPROM 芯片本身损坏或数据异常
- 主控板受到强电磁干扰
- 电源电压波动导致芯片逻辑紊乱
- 主板受潮、氧化引起引脚接触不良
- 芯片虚焊或线路板断裂
自助排查
- 断电后等待 5 分钟重新上电，观察是否恢复
- 检查室内机接线端子电压是否稳定在 220V±10%
- 若频繁出现，可尝试更换同型号主控板
- 联系售后工程师更换 EEPROM 芯片或主板
- 记录故障发生前的异常操作（如雷雨、频繁开关机）
English
Meaning
Indoor unit main control board EEPROM chip read/write failure. The system cannot properly read operating parameters.
Common Causes
- EEPROM chip damage or corrupted data
- Strong electromagnetic interference affecting the main board
- Power supply voltage fluctuations causing logic errors
- Moisture or oxidation on the board causing poor pin contact
- Cold solder joints or cracked PCB traces
Self-Check Steps
- Power off for 5 minutes, then restart and check if the error clears
- Verify the indoor unit terminal voltage is stable at 220V±10%
- If the error recurs frequently, try replacing the main control board
- Contact service engineer to replace the EEPROM chip or mainboard
- Note any unusual events before the failure (thunderstorms, frequent on/off cycling)