Instruction manual

Instruction manual
31
E04596
6.2 Fault finding
Symptom
Pilot consistently over or
under compensates when a
course error is detected
After functioning normally
course is suddenly lost and the
Wheelpilot 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 Steer To
Wind Mode.
Cannot select Steer To Wind
Mode.
Cannot select Nav Mode.
Autotack function not
working.
Pilot exits Nav Mode before
waypoint is reached.
Pilot does not hold accurate
course in Auto Mode.
Probable Cause
• Gain setting is respectively too high
or too low.
• Steering sensitivity scaling has been
incorrectly set.
• 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.
• Junction box is wired incorrectly.
• Apparent wind has become too light
to give a consistent direction.
• Masthead unit is not connected.
• SimNet system is not switched on
or powered.
• Required NMEA sentence not being
transmitted.
• GPS/Chart Plotter not connected.
• Waypoint not active.
• Wrong NMEA format is being used.
• Pilot is in Nav Mode.
• Pilot is in Steer To Wind Mode and
a) apparent wind is >90º
b) autotack being attempted is in
the wrong direction.
• Cross Track Error has exceeded 1.2
Nm.
• Fluxgate compass is being affected
by interference from nearby
magnetic influences (binnacle
compass, speakers) or metallic
objects (winches, deck hardware etc).
Remedy
• Adjust Gain setting
• Enter the correct scaling
for the vessel (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 junction
box (section 5.2).
• Change to Compass
Mode.
• Check connections.
• Check system is on.
• See section 6.3 & check
NMEA connections.
• Check connections.
• Activate waypoint/route.
• Check NMEA0183 format
is being transmitted by
navigational receiver.
• Exit Nav Mode.
• Luff up until apparent
wind is less than 90º.
• Reset the vessel on course
and re-engage Nav Mode.
• Check compass has been
calibrated (section 5.6).
• Fit external SimNet
compass.
• Replace binnacle compass
with bulkhead compass.
• Relocate objects that are
causing interference.
These simple checks should be carried out before seeking tech-
nical assistance and may save time and expense. Before con-
tacting your servicing agent, please note the Wheelpilot’s serial
number.