Page - 78/85 AF2ZP0CL - ACE2 - User Manual
21) HARDWARE FAULT 20
Cause:
Before driving the MC coil, the controller checks if the Mosfets drivers are
turned of by a not active (alarm status) Watch-dog signal. If they are not
turned of then the alarm is generated.
Troubleshooting:
The problem is inside the controller, no external component are involved,
replace the logic board.
22) HARDWARE FAULT 21
Cause:
Before driving the MC coil, the controller checks if the EB/AUX driver is
turned of by a not active (alarm status) Watch-dog signal. If it is not turned of
then the alarm is generated.
Troubleshooting:
The problem is inside the controller, no external component are involved,
replace the logic board.
23) HARDWARE FAULT A1
Cause:
Before driving the MC coil, the controller checks if the MC/AUX driver is
turned of by a not active (alarm status) Watch-dog signal. If it is not turned of
then the alarm is generated.
Troubleshooting:
The problem is inside the controller, no external component are involved,
replace the logic board.
24) COIL SHORTED MC
Cause:
This alarm occurs when there is a short circuit of the MC coils connected to
CNA#16 output. After the overload condition has been removed, the alarm
exits automatically by releasing and then enabling a travel demand.
Troubleshooting:
- The typical root cause for this error code to be displayed is in the harness
or in the load coil. So the very first check to carry out concerns
connections between controller outputs and loads.
- In case no failures/problems have been found externally, the problem is
in the controller, which has to be replaced.
25) COIL SHORTED EF
Cause:
This alarm occurs when there is a short circuit of the EB/AUX coils connected
to CNA#18 output. After the overload condition has been removed, the alarm
exits automatically by releasing and then enabling a travel demand.
Troubleshooting:
- The typical root cause for this error code to be displayed is in the harness
or in the load coil. So the very first check to carry out concerns
connections between controller outputs and loads.
- In case no failures/problems have been found externally, the problem is
in the controller, which has to be replaced.
26) CONTACTOR OPEN
Cause:
The main contactor coil has been driven by the controller, but the contactor
does not close.
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