中文
含义
E1 表示干衣机进风口温度传感器（NTC 热敏电阻）断路。GE 干衣机在进风道内装有负温度系数热敏电阻，主控板通过读取热敏电阻两端的阻值来实时计算进风温度，并据此控制加热元件的通断比，以维持滚筒内温度在设定范围内。当热敏电阻回路断开、主控板检测到阻值为无穷大（开路），系统判定传感器信号丢失，立即停止加热并显示 E1 代码，机器可能只翻滚不出热风。
常见原因
- 热敏电阻内部半导体晶片长期在高温-冷却交替循环下疲劳断裂，导致传感器本体开路，万用表测量阻值为无穷大。
- 热敏电阻连接线束在风道高温区域长期运行后绝缘层脆化龟裂，内部导线折断或从端子根部断开。
- 热敏电阻插接头因机器运行振动松脱，连接器锁扣老化断裂导致插头退出，信号回路物理断开。
- 进风道棉絮严重堆积，包裹热敏电阻探头形成厚隔热层，传感器局部持续过热后永久损坏。
- 主控板上热敏电阻信号输入通道的 A/D 采样回路故障（如分压电阻开路或输入滤波电容短路），即使传感器正常也无法读取信号。
自助排查
- 断开干衣机电源插头，打开前下方检修面板（部分机型需打开后盖板），找到进风道上的热敏电阻——通常为圆柱形探头，连有两根细导线。目视检查插接头是否完全插入，如有松脱则重新插紧直至听到锁扣”咔嗒”声。
- 用万用表电阻档（20 kΩ 或 200 kΩ 档）直接测量热敏电阻本体两端（需拔下插头后在传感器侧测量）。室温下（约 20–25°C）正常阻值应在 10 kΩ–50 kΩ 范围内。若显示 OL（无穷大），确认热敏电阻开路损坏，需更换。
- 用手捏住热敏电阻探头持续约 30 秒加热，再次测量阻值应明显下降。若阻值完全不变或仍为无穷大，传感器已失效。
- 沿传感器线束从探头端一直追溯到主控板，检查线束全程有无被滚筒摩擦、金属板边缘切割或被高温烤焦的痕迹。发现破损处用耐高温纤维胶带包裹或更换整条线束。
- 检查进风口滤网及风道是否有严重棉絮堵塞，使用吸尘器或软刷彻底清洁进风路径，棉絮积聚是热敏电阻故障的常见间接原因。
- 若传感器和线束均正常但仍报 E1，故障可能位于主控板输入端。此情况需联系 GE 售后或授权维修中心使用示波器进一步诊断，必要时更换主控板。
English
Meaning
E1 indicates an open circuit in the dryer’s intake air temperature sensor (NTC thermistor). GE dryers use a negative temperature coefficient thermistor mounted in the intake air duct to measure incoming air temperature in real time. The main control board reads the thermistor’s resistance to calculate air temperature and adjusts the heating element duty cycle accordingly, maintaining drum temperature within the set range. When the thermistor circuit is open and the control board detects infinite resistance, the system determines the sensor signal is lost, immediately disables heating, and displays E1. The drum may continue to tumble but without heat.
Common Causes
- The semiconductor element inside the thermistor has fatigued and fractured from repeated high-temperature/cooling cycles, resulting in an open circuit — a multimeter will read infinite resistance.
- The thermistor wiring harness insulation has become brittle and cracked after prolonged exposure to high temperatures in the air duct, with internal conductors broken or snapped off at the terminal root.
- The thermistor connector plug has loosened due to machine vibration; the locking tab has aged and broken, allowing the connector to back out and physically open the signal loop.
- Severe lint accumulation in the intake air duct has wrapped around the thermistor probe, forming a thick insulating layer that causes localized persistent overheating and permanent sensor damage.
- The A/D sampling circuit on the main control board for the thermistor input channel has failed (e.g., voltage-divider resistor open or input filter capacitor shorted), making sensor readings impossible even if the thermistor is functioning normally.
Self-Check Steps
- Unplug the dryer. Open the lower front access panel (or rear panel depending on model) and locate the thermistor in the intake duct — typically a cylindrical probe with two thin wires attached. Visually check that the connector is fully seated; if loose, push it in firmly until you hear the locking tab click.
- Using a multimeter in resistance mode (20 kΩ or 200 kΩ range), measure the thermistor itself (unplug the connector and probe the sensor side). At room temperature (approximately 20–25 °C / 68–77 °F), the normal resistance should be in the 10 kΩ–50 kΩ range. A reading of OL (infinite) confirms the thermistor is open and must be replaced.
- Pinch the thermistor probe with your fingers for about 30 seconds to warm it, then measure again. The resistance should drop noticeably. If the reading does not change at all or remains OL, the sensor has failed.
- Trace the wiring harness from the sensor probe all the way to the main control board. Inspect the entire harness for signs of rubbing against the drum, cuts from metal edges, or heat scorching. Wrap damaged sections with high-temperature fiberglass tape or replace the harness entirely.
- Check the intake air filter and duct for severe lint blockages. Use a vacuum or soft brush to thoroughly clean the intake air path — lint buildup is a common indirect cause of thermistor failure.
- If the sensor and harness check out but the E1 code persists, the fault likely lies on the main board input. Contact GE after-sales service or an authorized repair center for oscilloscope-based diagnosis and possible control board replacement.