Symptom
When engaged, the pilot
immediately applies a large
helm angle and increases
course error.
After functioning normally
course is suddenly lost and the
Tillerpilot goes into Standby
Mode.
Helm is hard over and alarm is
continuously on.
Power socket is live, but pilot
is
not on.
Loss of course under Sail To
Wind Mode.
Cannot select Sail To Wind
Mode.
Cannot select NavLock Mode.
Autotack function not
working.
Pilot exits NavLock before
waypoint is reached.
Probable Cause
Tillerpilot is configured for Porthand
setting but installed on Starboard side
(or vice versa).
* Power interrupted briefly, or low
voltage.
* Cable used to socket too small.
* Intermittent connection.
* Steerage way insufficient to control
course, or sails are aback. Pulsing is a
correct safety feature when tiller is at
full travel.
* Socket is wired incorrectly.
* Apparent wind has become too light
to give a consistent direction.
* Masthead unit is not connected.
* Corus system is not switched on.
* Required NMEA sentence not being
transmitted.
* Navigational receiver not connected.
* No waypoints have been
programmed.
* Wrong NMEA format is being used.
* Pilot is in NavLock Mode.
* Pilot is in Steer To Wind Mode and
a) apparent wind is >90…
b) autotack being attempted is in
the wrong direction.
* Cross Track Error has exceeded 1.21
Nm.
Remedy
* Refer to section 4.1.
* Increase size of cable.
* Check all connections.
* Charge batteries.
* Uprate batteries.
* Reset the vessel on course
and re-engage pilot
* Check wiring of socket
(see section 5.2).
* Change to Compass
Mode.
* Fit ATM601 Masthead
Unit.
* Check Corus Monocable
connections.
* See section 5.5.
* Check NMEA interface
connections.
* Check NMEA0183 format
is being transmitted by
navigational receiver.
* Exit NavLock.
* Luff up until apparent
wind is less than 90….
* Reset the vessel on course
and re-engage NavLock.
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