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Fault finding

Autopilot wandering off course / compass errors

Autopilot · Raymarine

Leisure & YachtMedium difficulty

Symptoms

The boat snakes, off-course alarms, difference between heading and actual course.

Probable causes

  • Compass/heading sensor not calibrated
  • Magnetic interference near the sensor
  • Steering parameters (gain/rudder) not optimal
  • Slow actuator/steering pump

Solution

Carry out the compass calibration (linearisation), move the sensor away from magnetic masses, tune the response parameters and check the rudder actuator/pump and the limit switches.

The information on this page is general guidance. It does not replace the manufacturer’s manual or the work of a qualified technician: before any intervention, always check procedures, tightening torques and safety requirements in the official documentation of the machine.

Field experiences

No experience has been published for this fault yet. If you have dealt with it, tell us how you solved it: photos and drawings help whoever faces the same situation.

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