Troubleshooting
20221032B 169
Display readout Probable fault Recommended action
Vessel off course Extreme weather
conditions, very slow
speed, or boats heading is
outside the fixed Off
heading limit of 20°
(automatic reset when
inside the limit).
1. Check the steering parameters
(Rudder, Autotrim, Seastate
filter).
2. Increase the Rudder value
3. Increase the boat speed, if
possible, or steer manually.
4. Check the steering gear and
autopilot interface.
NAV. data failure
(---).
Refer to page 145.
Missing or invalid Nav.
data.
1. Use NMEA Test menu.
2. Check the Nav. receiver set-up.
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