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Network Troubleshooting Chart
OBSERVATION POSSIBLE CAUSE PROCEDURE
“0” displayed in data fields. Data sources are not configured.
Use DATA SRCS menu to configure data
source.
ICON system does not power on. Power Supply Harness fuse is blown.
Check Power Supply Harness, fuses and
switched B+ from the ignition harness. See
Note below.
Power Supply Harness blown
fuse.
Network current draw is exceeding 3A.
Check all connections and wiring. Disconnect
accessory connections to network. Isolate pos-
sible overloads or shorted accessory.
No speed display.
Requires input from NMEA 2000 Speed
transducer, GPS or paddle wheel.
Check that the device is installed and con-
nected to the network.
Speed Over Water (SOW) does
not display.
Speed Over Ground (SOG) does
not display.
Requires input from NMEA 2000 GPS.
Water depth does not display. Requires NMEA 2000 depth transducer.
Sea water temperature does not
display.
Requires NMEA 2000 temperature trans-
ducer or analog sender.
Fuel tank level does not display.
Requires fuel level sensor or analog
sender.
No “FUEL ECON”. Requires input from NMEA 2000 GPS.
Note: The tachometer harness of the ICON gauge network must be connected to the NMEA 2000 network using the device port
of a t-connector. Misaligned t-connectors can cause the NMEA 2000 network power supply fuse to blow and disrupt or elim-
inate communication in the system.
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