Simrad AP25 Autopilot
92 20222139A
Display readout Probable fault Recommended action
Compass data
missing
No data from
selected compass.
1. If more that one compass is
connected to the system, refer to
the User Setup2/Source select menu
to select a different compass.
2. Make a source update if no
compass is available.
3. Check connections.
4. Replace compass PCB (Note: Do
not cut cables. There are screw
terminals inside).
No connection
with IPS system
Data missing or
erratic
Check connections to Volvo Autopilot
Interface. Also refer to the Volvo IPS
User Manual.
Failure active
Control Unit
Active control unit
goes silent.
1. Press the STBY button on an
"Inactive" unit to reset.
2. Check/repair Robnet2 cable.
3. Replace the control unit PCB.
ACXX high
temp.
Excessive
temperature inside
Autopilot
Computer
Switch off autopilot
Memory failure
ACXX
Wrong checksum
on memory
parameters or
variables.
Autopilot
Computer will use
default values.
Perform a "Master reset". Switch off
and on again. If the alarm is repeated,
replace Autopilot Computer PCB.
Com. failure with
ACXX
Faulty Autopilot
Computer or poor
Robnet2 cable
connections from
the same.
1. Check Robnet2 connectors and
cable.
2. Replace Autopilot Computer PCB.
Low supply
voltage
Supply voltage less
than 10,8 Volts
1. Verify in the System Data Menu
2. Switch autopilot off, charge batteries
3. Check/repair battery charger