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Troubleshooting
The VDO Logic Pilot is equipped with a self-diagnosis system. This facility allows errors, caused for instance
by incorrect installation, to be found rapidly.
The self-tests are performed automatically each time the power supply is switched on.
If faults are found, for example due to a missing cable connection, a corresponding error message is shown
on the LC display.
You will find a list of the possible error messages, their causes and the recommended remedial action on
the following pages.
Never connect or disconnect cables when the on-board power supply is on.
Check the electrical connections against the installation diagram before starting the system.
Connect cable screens correctly to chassis earth.
System messages and errors
If your VDO autopilot detects an error in the system, an error message is shown on the display. Serious errors
lead the autopilot to switch automatically from pilot to standby mode.
If any of the messages listed below is displayed, first follow the corresponding notes on troubleshooting. If
the fault cannot be located or rectified, your VDO Kienzle agency will be pleased to help you.
N
NoDa
W
NoDa
System errors can be recognised by the following error codes. For safety reasons, the autopilot switches
over automatically to standby mode on occurrence of system errors whose code exceeds 128.
Error code:
0 0 0 0 2 2
036
130
TROUBLESHOOTING
No data received from navigator within the last 5 seconds.
Check whether the navigator is correctly connected to the Pilot Box and whether
the navigator is transmitting NMEA data.
No data received from wind sensor within the last 5 seconds.
Check whether the wind sensor is correctly connected to the Pilot Box and
whether the wind sensor is transmitting NMEA data.
Meaning / Action:
NOVRAM checksum error
This error code can indicate that the saved settings are no longer valid. This
can occur immediately after a change of software. Check the settings before
using the autopilot.
Error receiving compass data
The compass data have not been correctly received by the Pilot Box. If this
error message is repeatedly displayed, the compass has to be checked.
Stack memory overflow
A software crash has occurred.
The cause may be excessive electromagnetic influences on the Pilot Box.
Remove all possible causes of interference from the vicinity of the Pilot Box
and turn the autopilot off and on again to clear the error message. If the problem
persists, call in your specialist.
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