中文
含义
空调室内环境温度传感器（室温传感器）故障，E1 表示传感器检测回路出现开路或短路。空调无法准确获取室内当前温度，可能导致制冷/制热效果异常或压缩机频繁启停。
常见原因
- 室温传感器热敏电阻本身损坏，阻值漂移超出正常范围（常温约 5kΩ–15kΩ，视型号而定）或完全开路/短路。
- 传感器插头与主板连接松动，接触电阻增大导致采样电压异常。
- 传感器连接线被老鼠咬断或因反复弯折导致内部铜丝断裂。
- 室内机主板传感器分压电阻或 ADC 检测电路元件损坏。
- 传感器外壳破损，内部热敏元件受潮后阻值不稳定。
- 室内机进风口长期堵塞，传感器周围空气不流通形成局部异常温度。
自助排查
- 完全断电 2–3 分钟后重新上电，观察 E1 是否消除。偶发性干扰可能触发误报。
- 检查室内机进风口的过滤网是否严重积尘，清洗过滤网后装回。
- 找到室温传感器（通常为进风口附近突出的黑色小探头），检查外观是否破损，插头是否插紧。
- 用万用表电阻档测量传感器两端阻值：常温（约 25°C）时应在 5kΩ–15kΩ 左右。若阻值为 0Ω（短路）或无穷大（开路），传感器已损坏需更换。
- 室温传感器属于低成本易损件（通常几元到十几元），更换操作简单。若具备一定动手能力，可购买同规格传感器自行更换；否则联系 TCL 售后上门检修。
English
Meaning
The indoor ambient temperature sensor (room temperature sensor) has failed. E1 indicates an open or short circuit in the sensor detection loop. The AC cannot accurately read the current room temperature, which may cause abnormal cooling/heating performance or frequent compressor cycling.
Common Causes
- The room sensor thermistor itself is damaged — resistance value has drifted outside the normal range (approximately 5kΩ–15kΩ at room temperature, depending on model) or is fully open/shorted.
- The sensor connector to the main board is loose, and increased contact resistance is causing abnormal sampling voltage.
- The sensor connecting wire has been chewed through by rodents or has internal copper strand breakage from repeated bending.
- The sensor divider resistor or ADC detection circuit components on the indoor main board are damaged.
- The sensor housing is cracked, and the internal thermistor element has absorbed moisture, causing unstable resistance.
- The indoor unit air intake has been blocked long-term, creating stagnant air around the sensor and an abnormal localized temperature.
Self-Check Steps
- Completely power off for 2–3 minutes, then power back on and check whether E1 clears. Occasional interference can trigger false alarms.
- Check whether the air filter at the indoor unit intake is heavily clogged with dust. Clean the filter and reinstall it.
- Locate the room temperature sensor (typically a small black probe protruding near the intake area). Check for housing damage and whether the connector is firmly plugged in.
- Use a multimeter in resistance mode to measure across the sensor terminals: at room temperature (approx. 25°C), resistance should be around 5kΩ–15kΩ. A reading of 0Ω (short) or infinite (open) means the sensor is damaged and needs replacement.
- The room temperature sensor is a low-cost consumable (typically a few dollars) and replacement is straightforward. If you have basic DIY skills, you can purchase a matching sensor and replace it yourself; otherwise contact TCL after-sales for an on-site repair.