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Alarm/Warning
No autopilot computer
No rudder response
Possible cause
Active control unit has lost contact
with autopilot computer.
No response to rudder command.
Recommended action
• Check the network diagnostics page on the display unit.
Should show few or no errors
• Check that the NMEA 2000 network is powered and termi-
nated according to guidelines
• Check that source selection is made and that the correct
autopilot computer is selected
• Check connectors and cables
• Check status LED on autopilot computer. Should blink steadily,
1 sec intervals
• Replace autopilot computer
• Check connectors and cables
• Check rudder feedback transmission link (not applicable for
Virtual feedback installations)
• Check the drive unit motor/brushes
• Check for mechanical play in rudder
• Check if the rudder is actually not moving
• Check that the rudder drive unit is powered and running
• Check for other mechanical issues between autopilot com-
puter and rudder
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