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| 故障代码 | 故障原因 | 机组状态 | 复位方式 |
| E1 | 压缩机1高压保护 | STOP | SET |
| E2 | 系统1防冻结保护 | STOP | AUTO |
| E3 | 压缩机1低压保护 | STOP | SET |
| E4 | 压缩机1排气温度保护 | STOP | SET |
| E5 | 压缩机1过载保护 | STOP | SET |
| E6 | 水泵过载保护 | STOP | SET |
| E7 | 水流开关保护 | STOP | SET |
| E8 | 风机1过载保护 | STOP | SET |
| E9 | 系统1防高温保护 | STOP | AUTO |
| b1 | 压缩机2高压保护 | STOP | SET |
| b2 | 系统2防冻结保护 | STOP | AUTO |
| b3 | 压缩机2低压保护 | STOP | SET |
| b4 | 压缩机2排气温度保护 | STOP | SET |
| b5 | 压缩机2过载保护 | STOP | SET |
| b8 | 风机2过载保护 | STOP | SET |
| b9 | 系统2高温保护 | STOP | AUTO |
| F1 | 防冻温度传感器1故障 | STOP | AUTO |
| F2 | 防冻温度传感器2故障 | STOP | AUTO |
| F3 | 除霜感温包1故障 | STOP | AUTO |
| F4 | 除霜感温包2故障 | STOP | AUTO |
| F5 | 排气感温包1故障 | STOP | AUTO |
| F6 | 排气温度传感器2故障 | STOP | AUTO |
| F7 | 室外环境温度感温包 | STOP | AUTO |
| F8 | 进水温度传感器 | YES | AUTO |
| F9 | 出水温度传感器 | STOP | AUTO |
| EC | 通信故障 | STOP | AUTO |
| EE | 存储芯片故障 | STOP | SET |
