Cause:

The domain controller successfully recognizes the radar, but if no data is received from the radar for 1.5 seconds continuously during flight, a "no communication" fault is triggered, and the aircraft will hover. If communication is restored within 30 seconds, the mission will continue. Radar communication loss is usually accompanied by no radar data.

Troubleshooting Methods:

1、Disconnect the FPV (if the FPV is short-circuited due to water ingress, it may lower the radar's power supply voltage) and test if the system operates normally.

2、Replace the wiring harness or replace the radar for cross-verification.

3、Replace the main controller, as the issue may be caused by an internal network-related link abnormality in the brain (main controller).