Common ELRS Receiver Issues and Solutions
Common Issues with ELRS Receivers and Solutions
Please refer to the table below to check if the receiver's LED indicator status is normal.
Receiver LED Constant On Explanation
LED Indicator Diagram
| LED灯示意图 | LED灯状态 | 情况一：遥控器已连接接收机 | 情况二：遥控器未连接接收机 |
| 常亮 | 正常连接到遥控器 | 接收机变砖或是进入了DFU慢闪 |
| 连续闪烁两次 | 接收机处于对频模式 | —— |
| 慢闪（500ms一次次） | 接收机正在等待连接（未处于对频模式） | —— |
| 连续闪烁三次 | —— | 接收机或遥控器启用了Model Match功能但Model Match设置并不匹配 |
| 快闪（25ms一次） | —— | 接收机处于WIFI模式 |
Binding Issues
1.The receiver cannot enter binding mode, and the receiver's LED stays in a slow blinking state.
Power cycle the receiver quickly 3 times, but the receiver still cannot enter DFU mode, and the receiver's LED remains in a slow blinking state
This may be because the receiver is using the binding phrase function.
After setting the binding phrase, the receiver will automatically bind to a remote controller with the same binding phrase.
However, it cannot enter binding mode through the quick power cycle method.
Solution: Reflash the receiver firmware without using a binding phrase.
Firmware Flashing Tutorial
2.The receiver cannot enter binding mode, and the receiver's LED stays solid
Power cycle the receiver quickly 3 times, but the receiver still cannot enter DFU mode, the LED remains solid, and the receiver cannot enter Wi-Fi mode.
This indicates that the receiver is not functioning properly. There may be two possible reasons:
（1）Installed the DJI Air Unit, and the receiver conflicts with the built-in receiver of the DJI Air Unit.
"You can refer to this article.： https://support.speedybee.cn/?s=teched&t=a&p=33&i=59106799151747072
（2）Receiver Bricked
You can refer to this article to reflash a bricked receiver:
https://support.speedybee.cn/?s=teched&t=a&p=33&i=59841162780872704
3,The receiver and remote controller are both in binding mode, but they still cannot bind
（1）The receiver and remote controller are both in binding mode, but the receiver's LED still blinks slowly.
This indicates that the firmware versions of the receiver and remote controller are incompatible.
- The ELRS receiver and the remote controller must have the same major version to bind; for example, a 3.0.1 version receiver cannot bind with a 2.4.0 version remote controller.
Solution：
You can refer to this article to flash the receiver and remote controller to the same version.： 如何通过飞控 刷写ELRS接收机的固件
（2）After binding, the receiver's LED flashes rapidly three times, the remote controller shows the receiver's signal strength, but the flight controller displays 'Receiver not recognized
Please refer to the article below for troubleshooting.
ELRS receiver binds successfully, LED flashes three times, wiring is correct, versions match, but still unable to control.
After binding, the flight controller still cannot recognize the receiver (the receiver's LED stays solid)
This is usually due to incorrect settings or issues with the receiver.
Please refer to this article to recheck the receiver's settings and wiring for correctness.： 如何连接与设置ELRS接收机
Note:
- The flight controller's TX needs to be connected to the receiver's RX.
- The flight controller's RX needs to be connected to the receiver's TX.
Flight Issues Related to the Receiver
1.When using the ELRS receiver, there is a 'clicking' sound when moving the roll or pitch controls.
You can refer to this article for troubleshooting.： 使用ELRS接收机出现飞行时异响怎么办