Simrad TP22 - Page 26

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Symptom Probable Cause Remedy
Cannot select
Nav mode
- GPS/Chart Plotter
not connected
- Waypoint not
active
- Wrong NMEA
format is being
used
- Check connections
- Activate waypoint/
route
- Check NMEA 0183
format is being
transmitted by
navigational receiver.
Autotack
function not
working
- 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
- Exit Nav Mode
- Luff up until
apparent wind is less
than 90º.
Pilot does not
hold accurate
course in Auto
mode
- Fluxgate compass
is being affected by
interference from
nearby magnetic
influences (binnacle
compass, speakers)
or metallic objects
(winches, deck
hardware etc).
- Check compass has
been calibrated
(“Auto compass
calibration” on page
22).
- Fit external SimNet
compass.
- Replace binnacle
compass
- Relocate objects
that are causing
interference.
These simple checks should be carried out before seeking technical
assistance and may save time and expense. Before contacting your
servicing agent, please note the Tillerpilot’s serial number.