Fault Finding; Typical Failures; General Operation; Sensors - Hardi AutoSlant UC7 Instruction Book

Typical Failures

General Operation

Boom does not appear to be level after system setup
• The sensitivity setting may be too low. Check the sensor height readings from the run screen, if it differs from the target
height then try turning up the sensitivity. The default tolerance for a sensitivity setting of 5 is ± 6 cm.
• The sensor offset heights may be incorrect. Refer to "Sensor Setup" on page 52.
The system will not go into Automatic Mode
• Ensure the system has completed an Automatic System Setup. If you have started and not finished an Automatic
System Setup, the system will not allow you to go into Automatic mode.
The system resets when a valve is turned on
• Check the power supply. Ensure the sprayers power supply voltage is more than +12 V DC.
• This may also be caused by a damaged or defective power supply cable. Check the power cable for a good connection
to the supply.
The system randomly switches between Automatic and Manual Mode
• This may be caused by a damaged or defective interface cable. Ensure all cables are connected correctly. The
connections should be tight and free of corrosion.
• There may be electrical noise on the sprayer's D.C. system. Add a power line filter or free-wheeling diodes on one or
more of the sprayer's solenoid valves.

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.

7 - Fault Finding

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