Rainbow SRX Diagnostic LED Light Flashing or Solid Red
The circular indicator around the power button flashes red or stays solid red. Motor may refuse to spin or limits max speed to low idle.
Possible Causes
Rainbow SRX microprocessor self-test alert triggers:
- HEPA Filter Overpressure Warning (Solid Red): Rear H13 HEPA saturated beyond safe backpressure limit. MCU throttles motor to prevent coil overheating.
- Water Basin Sensor Disconnect (Blinking Red): Basin interlock optical prism obscured by scale or unlatched.
- Inverter Driver Fault: Power board detect over-current or thermal throttling on switched reluctance drivers.
Diagnostic & Check Steps
1. 卸下尾部盖板，检查 HEPA 滤芯是否透黑需要更换；2. 重新扣紧水箱两侧锁扣，擦拭水盆边缘水垢；3. 拔掉电源静置 5 分钟后重新插电复位 MCU；4. 若红灯持续闪烁请联系专业检修。