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height lower than -9
inches. It is commonly
mistaken as an error.
b. Sensor is facing very strong
sonic targets (e.g. concrete).
b. Follow 4.2.4 c).
BF NoRdg
Explanation Possible Causes Required Action
The Roll reading is not
being measured
properly. Similar error
screens may replace the
"BF" reading identifier
with "LO", "ML", "RI",
"CY", "SP", "IF",
"RF", etc.
This is commonly a sensor-
rod alignment issue.
* If this message is displayed
very briefly, it may not be a
problem.
Investigate the source of reading
error with the identified sensor / rod.
Refer to Section 6 for more
information.
Minimum Override
Explanation Possible Causes Required Action
This message is
displayed when a target
height setpoint is lower
than allowed (minimum
height override).
Operator is proceeding to use
a lower target height setpoint
than allowed.
Adjust the boom height setpoint
greater than the minimum height
override (Section 3.3).
Disabled
Explanation Possible Causes Required Action
Access to System Setup
features (Install,
ReTune) have been
locked out.
Access to these features was
disabled by installer to avoid
unintentional system changes.
Contact NORAC for instructions to
enable feature access.
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