NORAC UC5-BC-AL Manual - Manual (Page 49)

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11.2 Sensors
Height or roll sensor appears not to work (displays “NO COMM”):
 This may be caused by a damaged or defective CAN-bus cable. Ensure all cables are
connected correctly. The connections should be tight and free of corrosion.
 If the cables check out ok the sensor may be damaged. Try swapping sensors to see if the
problem follows the sensor.
Invalid height sensor measurement (displays “NO DATA”):
 It is normal to see this message occasionally. If you are seeing this message all the time
the sensor may be having difficulty obtaining a proper reading. Ensure the sensor is not
out of range. Check the sensor alignment. The sensor should point almost perpendicular
to the ground and there should be no obstructions between the sensor and the ground.
 The protective foam shield may be contaminated. Inspect and clean the foam shield. If it
is severely worn or dirty replace the foam shield.
 The sensor may have moisture in it. This can be common for sprayers which fold the
wing tips up; therefore pointing the sensors into the air. If rain or moisture collects in the
sensor, remove the protective foam disc and allow the water to drain out. If you leave
the sensor running it will dry out on its own and start working again.
 The sensor transducer may be damaged. Remove the foam shield and check if you can
hear the sensor ticking. If you cannot hear the ticking sound or if it is very faint then the
transducer may be damaged and the sensor would need repairing.