After a hard landing, the GPS to be determined by the HUD: No GPS. A new calibration of the compass starts on the internal compass only. Here 3 is connect to CAN1.
… Rebooted the autopilot. After that, when turned on, the here3 diodes passed blue and went out. The system does not see here3 at all. in HW ID Here 3 is no. What can I do?
The blue LED flash then nothing is symptomatic of there being no CAN communication, or you’ve got it plugged into the wrong socket.
Just follow the Here 3 manual to set the CAN parameters correctly.