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Symptom
Possible cause
Solution
Barrier does not
move
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!
!
!
Blown fuse
Battery low, faulty or
disconnected
Latched input on
MI/NMI/Raise/Lower
Incorrect spring tension
26. Faultfinders guide
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!
!
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Replace the 30A ATO fuse
Refer to the battery charge level on
the diagnostic screen – replace if
necessary. See Procedure A.
Ensure that there are no auto-
activations set for these inputs that
are still in effect. Refer to the matrix
in the diagnostic screen showing
auto-activations
The diagnostic screen will display
how many turns is necessary to
achieve optimum spring tension and
in which direction the nut must be
turned. When the ideal spring
tension is reached, a zero will be
displayed
Boom pole moves
a short distance
and stops
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!
!
!
!
Battery low condition
False collision condition
Faulty or disconnected
DOSS
Excessive play on the
gearbox
Primary drive-arm is loose
on the output shaft
!
!
!
!
!
Check physical condition of battery
and terminals; check battery charge
state and charging voltage on
diagnostic screen. See procedure A.
Ensure that nothing is hindering the
trajectory of the boom pole
Replace faulty DOSS or reconnect
unplugged DOSS connections
Tighten drive-arm or contact local
CENTURION agent
Contact local CENTURION agent to
service gearbox
Boom pole starts
lowering, then
abruptly stops and
raises again
!
!
Collision sensitivity set
too high
False collision condition
!
!
Adjust collision sensitivity to a
MEDIUM or LOW setting
Check for physical obstructions
Controller cannot
be set to Auto-
lower, the Auto-
lower status
automatically
reverts back to
“Off”
!
Controller is set to
“Complex” mode
!
Depending on the application, set
the controller to “Simplex” mode
Procedure A - Low battery voltage condition
Status light flashes three times – LCD indicates battery low
If the battery voltage is less than 13.5V DC, the barrier will not operate at all. For any
other voltage, the battery could still be the cause of the problem. Is the battery being
properly charged?