Error Messages (Troubleshooting) - Raymarine Evolution EV-2 Installation Instructions Manual

12.2 Error messages (Troubleshooting)

The following messages are displayed on the Autopilot controller display when there is an error with
the autopilot system requiring your attention. Use the information provided here to troubleshoot
your autopilot
Alarm Message
AUTO RELEASE
DRIVE STOPPED
NO RUDDER REFERENCE
STALL DETECTED
CLUTCH OVERLOAD
System checks and troubleshooting
Possible causes
Possible fault with rudder angle
reference sensor. Alternatively,
if your autopilot system
includes a stern I/O drive, you
have taken manual control of
the steering while the pilot is in
Auto mode.
• Motor / steering has not
moved within 20 seconds of
a course change command.
• The autopilot is unable to turn
the rudder (either because
the weather load on the helm
is too high, or if the rudder
angle sensor has passed
beyond the preset rudder
limits or rudder end-stops.
• Autopilot resets due to an
external event (such as use
of the sleep switch, or faulty
wiring causing the autopilot
components to power cycle).
• Autopilot resets due to
software error.
No rudder angle reference
sensor is detected, or the
rudder angle reference
sensor has turned outside its
operational range (50 degrees).
Motor speed dropped too low
for given course change or
motor stalling. This can be
caused by a faulty drive unit or
steering fault. Alternatively, the
steering hard-over time may be
too slow.
The clutch for the drive system
is demanding a greater power
output than is supported by
the clutch power output of the
Evolution components.
Solution
• Check rudder angle
reference sensor
connections.
• For systems using the Volvo
Penta EVC drive interface
unit, check the unit is
operating correctly.
• Check the rudder angle
reference sensor has been
installed correctly to reflect
the limits and end-stops of
the vessel's rudder system.
• For EV-1 systems, check
ACU drive output voltage
and drive and clutch voltage
output (if applicable).
• For EV-1 systems, check all
connections to ACU.
• Check all connections to
drive unit.
• Check that the drive unit
operates and is not stalled.
• Check steering system is
secure.
If a rudder angle reference
sensor is installed, check the
wiring. Inspect the unit for
possible damage.
• Check that the drive unit
operates and is not stalled.
• Check the steering hard-over
time.
Refer to the clutch power
output ratings provided in the
Installation instructions for the
relevant Evolution components,
and ensure the clutch for the
drive unit does not exceed this
power output.
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