Hardi AutoHeight, Instruction Book

Page: 51 / 62

51
7 - Fault finding
Operational problems
General info
This section discusses common symptoms and suggested solutions when the AutoHeight system is being installed or
operated.
General operation
Different cases of general operational issues are discussed below:
Problem(s) Possible Cause(s) Suggested Solution(s)
Boom does not appear to be level after system setup. The sensitivity setting may be too low. Check the sensor height readings; if they differ from
the target height, try turning up the sensitivity.
NOTE: The default tolerance distance is ±6 cm at
Sensi
setting of 5.
The dead zone may be calibrated incorrectly. If the
dead zone is set too low, the system cannot make
small corrections. Recalibrate the dead zones as
described in “Setting Up Hydraulic Valves” on
page 29.
The sensor offset heights may be incorrect. Refer to
“Setting Up Sensors” on page 28.
The system will not go into automatic mode. Ensure the system has completed an automatic
install. If you have started and not finished an automatic
install, you will need to manually tune at least one
hydraulic function (“Setting Up Hydraulic Valves” on
page 29) before the system will allow you to go into
automatic mode.
The system resets when a valve is turned on. Check the power supply. The sprayer’s power supply voltage must be more
than 12 V DC.
Damaged or defective power supply cable. Check the power cable for a good connection to the
supply.
The system randomly switches between auto and
manual mode. Damaged or defective interface cable. Ensure all cables are connected correctly. The
connections should be tight and free of corrosion.
Electrical noise on the sprayer’s DC system. Add a power line filter or freewheeling diodes on one
or more of the sprayer’s solenoid valves.