中文
含义
室内温度传感器故障。空调可启动运行，但温度检测失常，可能导致持续制冷或持续制热不停机，或开机即停机判断错误。
常见原因
- 室内环温传感器（热敏电阻）开路或短路
- 传感器插头接触不良或线路断裂
- 传感器阻值漂移偏离标准分压范围（25℃时通常5-10kΩ）
- 主板上传感器分压电阻变值
- 传感器安装位置被遮挡或积灰严重
自助排查
- 关机断电后拔下传感器插头，测量传感器两端阻值并与温度对照表对比
- 清洁传感器探头表面污垢
- 检查传感器线束有无破损或插针氧化
- 更换同规格室内环温传感器
English
Meaning
Indoor ambient temperature sensor failure. The AC can start but temperature detection is inaccurate, causing continuous cooling or heating without stopping, or incorrect on/off cycling.
Common Causes
- Open or short-circuited indoor ambient thermistor
- Loose sensor connector or broken wiring harness
- Sensor resistance drifted from standard voltage-divider curve (5-10kΩ at 25°C typical)
- Changed divider resistor value on the main board
- Sensor blocked by obstructions or heavily caked with dust
Self-Check Steps
- Power off, disconnect the sensor, measure its resistance and compare with the temperature-resistance chart
- Clean the sensor probe surface
- Check the sensor harness for damage or corroded pins
- Replace with a matching indoor ambient thermistor of the same specification