Fault Finding; Common Autopilot Problems - Raymarine autopilot control unit Owner's Handbook Manual

36

4.1 Fault finding

Common autopilot problems

SYMPTOM
Display is blank
Display shows stationary dashes
Display shows rotating dashes
Displayed compass heading does
not agree with the boat's compass
No display bar on the display
Rudder bar display moves in
opposite direction to rudder
Boat turns slowly and takes a long
time to come onto course
Boat overshoots when turning onto
a new course
The autopilot appears to be
unstable in Track mode, or
track-holding is slow
The autopilot appears to be
unstable on Northerly headings in
the Northern hemisphere (or
Southerly headings in the Southern
hemisphere)
You cannot enter Seatrial
Calibration
The autopilot will not 'talk' to other
SeaTalk instruments
Position information not received
The autopilot will not auto advance
to the next waypoint
ST7001+ Autopilot Control Unit - Owner's Handbook
CAUSE and SOLUTION
No power – check the power and SeaTalk fuses
on course computer, then check main
fuse/circuit breaker.
The control unit is not receiving data – check
cabling.
Compass correction in progress (see page 64).
You have not calibrated the compass. Carry out
the deviation and alignment procedures (see
page 64).
Rudder bar switched off in Display Calibration
– select RUDD BAR or STEER BAR
Reverse the red and green rudder position
sensor connections at the course computer
Rudder gain too low (see page 71). Complete
AutoLearn or increase setting.
Rudder gain too high (see page 71). Complete
AutoLearn or decrease setting,
If tide speed exceeds 35% of boat speed, and
boat speed is not available via SeaTalk, change
the Cruise Speed setting in Dealer Calibration
to the boat's cruising speed (see page 99).
Northerly/Southerly heading correction
(AutoAdapt) is not set up (see page 99). [Does
not apply to 150G/400G systems.]
Seatrial calibration lock is on – turn off the
calibration protection feature in Dealer
Calibration (see page 92).
Cabling problem – make sure all the cables are
connected properly.
Navigator not transmitting the correct position
data.
No bearing to waypoint information received
from the navigator.