Zapi ACE0 2mC - Page 112

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CURRENT GAIN (MDI/LED code = 92)
Cause:
The maximum current gain parameters are at the default values, which
means that the maximum current adjustment procedure has not been carried
out yet.
Troubleshooting:
Ask for assistance to a Zapi technician in order to do the adjustment
procedure of the current gain parameters.
DATA ACQUISITION (MDI/LED code = 0)
Cause:
Controller in calibration state.
Troubleshooting:
The alarm ends when the acquisition is done.
DRIVER SHORTED (MDI/LED code = 74)
Cause
The driver of the LC coil is shorted.
Troubleshooting
- Check if there is a short or a low impedance pull-down between NMC
(A12) and -B.
- The driver circuit is damaged; replace the logic board.
DRV. SHOR. EV 02 (MDI/LED code = 21)
Cause:
AUX valve driver is shorted.
Troubleshooting:
- Check if there is a short circuit or a low impedance path between the
negative terminal of the coils and -B.
- If the problem is not solved, replace the logic board.
EB. COIL OPEN (MDI/LED code = 43)
Cause
:
This fault appears when no load is connected between the NEB output (A4)
and the EB positive terminal PEB (A2).
Troubleshooting
:
- Check the EB coil.
- Check the wiring.
- If the problem is not solved, replace the logic board.
EB. DRIV.OPEN (MDI/LED code = 42)
Cause:
The EB 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 logic
board.
EB. DRIV.SHRT. (MDI/LED code = 40)