中文
含义
室内机蒸发器管温传感器开路或短路，影响制冷/制热模式判断。
常见原因
- 蒸发器管温传感器插头松动
- 传感器开路或短路损坏
- 传感器金属探头与铜管接触不良
- 连接线老化断裂
- 主板传感器接口电路故障
自助排查
- 断电后重新插拔室内机管温传感器接头
- 用万用表检测传感器阻值，应与室温传感器阻值相近
- 确保传感器探头紧贴蒸发器铜管
- 清理传感器插针处氧化层
- 若无法恢复，需更换同型号管温传感器
English
Meaning
Indoor unit evaporator coil temperature sensor open or short circuit. Affects cooling/heating mode logic.
Common Causes
- Loose evaporator coil sensor connector
- Open or short circuit failure of the sensor
- Poor thermal contact between the sensor probe and the copper tube
- Aged or broken sensor wiring
- Faulty sensor interface circuit on the mainboard
Self-Check Steps
- Power off, then reseat the indoor unit coil sensor connector
- Measure the sensor resistance with a multimeter; should be similar to the ambient sensor
- Ensure the sensor probe is firmly attached to the evaporator coil tubing
- Clean any oxidation from the sensor pins
- If the error persists, replace with a coil sensor of the same specification