Page - 66/81 AFCZP0BC- COMBIACX & ACEX - User Manual
7) “CONTACTOR DRIVER”
Cause:
The LC coil driver is not able to drive the load. The device itself or its driving
circuit is damaged.
Troubleshooting:
This type of fault is not related to external components; replace the controller.
8) “CONTACTOR OPEN”
Cause:
The main contactor coil has been driven by the controller, but the contactor
does not close.
Troubleshooting:
It could be also a problem of the contact in the LC that is not working (does not
pull-in), try replacing the LC.
9) “CONTACTOR CLOSED”
Cause:
Before driving the LC coil, the controller checks if the contactor is stuck. The
controller drives the bridge for some tens milliseconds, trying to discharge the
capacitors bank. If they don’t discharge the fault condition is entered.
Troubleshooting:
It is suggested to verify the power contacts of LC; to replace the LC is
necessary.
10) “AUX DRIV. SHRT.”
Cause:
The driver of the electromechanical brake coil is shorted.
Troubleshooting:
A) Check if there is a short or a low impedance pull-down between NEB
CNA#4 and –BATT.
B) The driver circuit is damaged in the controller, which has to be replaced.
11) “AUX DRIV. OPEN”
Cause:
The driver of the electromechanical brake coil is not able to drive the load.
Troubleshooting:
Replace the controller.
12) “POS EB SHORTED”
Cause:
The output of the built in Smart Driver, which supplies the positive to the
Electromechanical brake coil is high when the Tiller and the H&S switch are
open.
Troubleshooting:
A) It is suggested to check the harness, in order to verify if a positive is
connected to the Smart driver output CNB#1.
B) If, even disconnecting the wire from the connector pin, the output stays at
high value, the problem is inside the controller and the Smart Driver is
probably shorted.
13) “LOGIC FAILURE #1”
This fault is displayed when the controller detects an overvoltage or
undervoltage condition. Overvoltage threshold is 35V, undervoltage threshold is
9,5V in the 24V controller. In 36/48V controller overvoltage threshold is 65V,
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