ComNav Commander P2 & P2VS Installation & Operation Appendices
Document PN 29010074 V4.1 - 196 -
Severe Errors
The following messages are “severe” errors. Typically, these messages describe a condition
that prevents normal operation in the current mode, but operation in other modes may still be
possible.
These error messages may be temporarily suppressed by pressing the
F
F
n
n
button. They are
automatically cancelled when the condition that caused them is removed.
Message Description
COMPASS ERROR
The autopilot cannot read the Analog compass specified in the
Standby menu.
Check compass wiring.
FAULTY AUX #1
FAULTY AUX #2
The SPU has detected a problem in communicating with the
Control Head connected to
J12 – AUX1
(or
J13 – AUX 2
).
Check all wiring.
HIGH
TEMPERATURE
The SPU circuitry has become too hot, typically due to
excessive current demands.
Check all wiring and verify that all output loads (solenoids,
pump motors, etc.) are within the SPU’s specifications.
Check that the SPU has adequate ventilation.
INVALID CRS DATA
Valid NMEA Course data has not been received at NAV1 or
NAV2 for ~28 seconds.
INVALID SPEED
DATA
Valid NMEA Speed data has not been received at NAV1 or
NAV2 for ~28 seconds.
Check that the Navigation System sending the data is
turned on, and configured & functioning properly.
Check the wiring between the system and the SPU.
INVALID HEADING
If an Analog Compass is selected as the Compass Source in the
Standby menu, this message indicates that the signals from the
compass are faulty.
Check the wiring between the Compass and the SPU.
If an NMEA 0183 Compass or other source of Heading data
(NAV1 or NAV2 in the Standby menu) is selected as the
Compass Source, this message indicates that no valid Heading
sentences have been received for ~3 seconds.
Check that the device is turned on and functioning properly.
Check the wiring between the device and the SPU.
NO NAV DATA
The SPU has not been able to detect, for ~32 seconds, at the
Nav Source specified in the Nav menu, the NMEA 0183
navigation information it needs to operate in
NAV
mode.
NO SPEED DATA
The SPU has not been able to detect, for ~32 seconds, at the
Speed Source specified in the Auto menu, the NMEA 0183
Speed data it needs to operate in
AUTO
or
WORK
mode.
Check that the device sending the data is turned on and
functioning properly.
Check the wiring between the device and the SPU.
Table 15 – Severe Error Messages
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