Error 7 on the ATS48
ATS48, Altistart 48
Communication time out between the remote display and control board
Unplug the remote display and cable. Plug both back in to see if the fault clears.
If applicable remove the control board and check the connections from the control to the power board.
If available, try another remote display to see if the problem lies with the remote, or the control board.
Replace the control board (VX4G481) or soft start if issue does not persist