PROPILOT 700
48
10. System Faults
The System faults are identified by numbers as indicated below.
For safety reasons, faults with a number greater than 128 will result
in the autopilot automatically switching to Manual mode.
002 NOVRAM CHECKSUM ERROR
• This fault may indicate that the Autopilot’s stored parameters are
no longer valid, these should be checked before further use.
036 EXTERNAL COMPASS MESSAGE FAULT
• The compass message has not been received correctly by the Pilot
Computer.
If this occurs repeatedly then the compass should be repaired.
065 PORT MESSAGE OVERRUN ERROR
• The messages received by the Pilot Computer for the Autopilot
Control is longer than expected.
It could be caused by excess electrical noise interfering with the
data cables of the Autopilot Control or by a loose 619 interface PCB
(100285).
066 PORT READ CHECKSUM ERROR
• The messages received by the Pilot computer for the Autopilot
Control is longer than expected.
It could be caused by excess electrical noise interfering with the
data cables of the Autopilot Control.
070 PL14 TIMEOUT
• The alarm will occur if the Control head connected to PL14 in the
Pilot computer is incorrectly selected or if a control unit fails to
respond. Check the wiring to the plug.
071 PL15 TIMEOUT
• The alarm will occur if the Control head connected to PL15 in the
Pilot computer is incorrectly selected or if a control unit fails to
respond. Check the wiring to the plug.
081 PC COMMS ALARM
• Indicates that data from the PC is of the wrong format.
Warning messages 128 and above are accompanied by
audible (if the unit has one) and visual alarms , and the
autopilot will have switched to standby (manual) mode.
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