Page 134/169 AFNZPxxx – DUALACE2 NEW GENERATION – User Manual
At start-up, the hardware circuit dedicated to enable and disable the EB driver
(output NEB, pin A28) is found to be faulty. The hexadecimal value “XX”
facilitates Zapi technicians debugging the problem.
Troubleshooting:
This type of fault is not related to external components. Replace the logic board.
HW FAULT EV. XX (MDI/LED code = 16)
Cause:
At start-up, the hardware circuit dedicated to enable and disable the EV drivers is
found to be faulty. The hexadecimal value “XX” facilitates Zapi technicians
debugging the problem.
Troubleshooting:
This type of fault is not related to external components. Replace the logic board.
HW FAULT XX (MDI/LED code = 32)
Cause
At start-up, some hardware circuit intended to enable and disable the power
bridge or the LC driver (output NLC, pin A26) is found to be faulty. The
hexadecimal value “XX” facilitates Zapi technicians debugging the problem.
Troubleshooting
This type of fault is related to internal components. Replace the logic board.
INCORRECT START (MDI/LED code = 79)
Cause:
Incorrect starting sequence. Possible reasons for this alarm are:
- A travel demand active at key-on.
- Man-presence sensor active at key on.
Troubleshooting:
Check the states of the input at key-on.
Check wirings and the microswitches for failures.
Through the TESTER function, check the states of the inputs are coherent with
microswitches states.
If the problem is not solved, replace the logic board.
INIT VMN HIGH XX (MDI/LED code = 31)
Cause
Before closing the LC, the software checks the power bridge voltage without
driving it. The software expects the voltage to be in a “steady state” value.
If it is too high, this alarm occurs. The hexadecimal value “XX” identifies the faulty
phase:
81: phase U
82: phase V
83: phase W
Troubleshooting
Check the motor power cables.
Check the impedance between U, V and W terminals and -B terminal of the
controller.
Check the motor leakage to truck frame.
If the motor connections are OK and there are no external low impedance paths,
the problem is inside the controller. Replace it.