​Root Cause：

​Obstructions and interference exist between the remote controller and aircraft. Strong signal interference on the remote controller causes signal loss.

​Troubleshooting Steps:

 Ensure no obstructions or interference affect the telemetry link between the remote controller and aircraft.

Re-initialize frequency pairing between the remote controller and aircraft.

If frequency pairing fails, verify if the video transmitter version is displayed on the remote controller.
​If not displayed, replace the remote controller and re-pair frequencies.