代码 A157: A/D Hardware Failure
问题描述与安全警告
Carrier 48/50Z HVAC Rooftop PIC Alarm List 触发了严重的 A/D Hardware Failure 警报。需要由合格的操作员或维修技师立即处理，以防止在制造周期中对设备造成二次损坏或导致零件报废。在接触电气控制箱之前，请务必确保遵循标准安全和停机挂牌 (LOTO) 程序。
官方故障排除步骤
Code type: Staged gas alarm Source table: Table 78 SGC Alarm Codes Unit family: 48ZJ/ZL/ZW and 50ZJ/ZK/ZL/ZM/ZW/ZZ single-package rooftop units with Product Integrated Controls (PIC). Action taken by control: Unit Shutdown* Reset method: Automatic Probable cause: Hardware problem.
Source: Carrier 48/50Z-2T Controls Operation and Troubleshooting (Form 48/50Z-2T)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
关于 Carrier 48/50Z HVAC Rooftop PIC Alarm List 警报
由 Carrier 制造的工业控制器具有广泛的诊断系统，用于保护内部电路和机械连杆。当 48/50Z HVAC Rooftop PIC Alarm List 出现类似 A157 的错误代码时，通常表示指令值与实际传感器反馈之间存在不匹配。
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