114 | Troubleshooting
Display
readout
Probable fault Recommended action
Bypass/clutch
overload
Clutch/bypass current
exceeds 3.3 Amps (overload
or short circuit)
Check actual current
Check voltage marking on coil
Check coil resistance (through
connecting wires)
Bypass/clutch
disengaged
Poor connection or open
circuit in bypass/clutch coil
Check connections
Replace bypass/clutch if open
Perform new "Rudder test"
ACXX High
temperature
Excessive temperature in
autopilot computer
(>80°C), possible long term
overload
Switch off autopilot
Check for backload in Drive
unit/steering system
Check that the autopilot
computer specifications
matches Drive unit
ACXX Memory
failure
Wrong checksum on
memory parameters or
variables. Autopilot
computer will use default
values
Perform a "Master reset" and
make a new "Dockside set-up".
Switch off and on again. If the
alarm is repeated, replace
autopilot computer
No Autopilot
computer
Faulty autopilot computer or
poor cable connections from
the same
Check connectors and cable
Replace autopilot computer
Low drive
supply
Supply voltage less than 9
Volts
Switch autopilot off, charge
batteries
Check/repair battery charger
High drive
supply
AC12/AC42 Supply exceeds
35 Volts
Switch the autopilot off
Check/repair battery charger
Depth data
missing
Missing or invalid depth
data
Check depth sensor/cables
Wind data
missing
Missing or invalid wind data Check wind sensor/cables
Wind shift Wind shift exceeds ‘Wind
shift limit’
Re-enter Wind mode to reset
the Wind shift reading
Expand limit
Set wind shift limit to Off
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