B&G H2000 Pilot *DISCONTINUED* - Manual (Page 132)

h2000 Autopilot User Manual
Part 6 - Diagnostic Data
HB-0842-04
6-8
With someone moving the helm, the signal should
change smoothly. If the signal is incorrect, suspect a
faulty rudder reference unit. Note the difference between
the signal voltages measured at the two end stops must
be at least 1V dc.
(3) Set display (Hydra or Hercules) to show digital
rudder angle in degrees. Move helm to Port and
Starboard end stops; check that the indicated rudder
angle is 40 degrees (+/-2). If not, check the rudder
reference installation to determine and rectify the reason
for the end stop position changing and then re-enter the
set end stop commissioning values.
(4) Move helm slowly from end stop to end stop. Check
that indicated rudder angle counts from 40 deg. one side
to 40 deg. the other side without "missing" a count.
(5) If the fault is always at the same rudder angle,
suspect a faulty rudder reference unit.
(6) If the fault is at different rudder angles suspect a fault
in the wiring, the connections to the autopilot computer,
or the autopilot computer electronics.
6.2.4 Fault 103 - Rudder Drive
Fault Description
The autopilot attempted to move the rudder, but did not
sense any change in rudder position
or
When the autopilot attempted to move the rudder, it
moved in the wrong direction.
Remedy
(1) Is the heavy-duty power supply circuit breaker for the
autopilot drive switched on?