AFNZPxxx– DUALACE2 NEW GENERATION – User Manual Page 129/169
Cause:
One or more on/off valve drivers are not able to drive the load. For the meaning
of code “XX”, refer to paragraph Errore. L'origine riferimento non è stata
trovata..
Alarm not present on DualACE2.
Troubleshooting:
The device or its driving circuit is damaged. Replace the controller.
CONTACTOR CLOSED (MDI/LED code = 37)
Cause
Before driving the LC coil, the controller checks if the contactor is stuck. The
controller drives the power bridge for several dozens of milliseconds, trying to
discharge the capacitors bank. If the capacitor voltage does not decrease by
more than a certain percentage of the key voltage, the alarm is raised.
Troubleshooting
It is suggested to verify the power contacts of LC; if they are stuck, is necessary
to replace the LC.
CONTACTOR DRIVER (MDI/LED code = 75)
Cause
The LC coil driver is not able to drive the load. The device itself or its driver circuit
is damaged.
Troubleshooting
This type of fault is not related to external components; replace the logic board.
CONTACTOR OPEN (MDI/LED code = 38)
Cause
The LC coil is driven by the controller, but it seems that the power contacts do not
close. In order to detect this condition the controller injects a DC current into the
motor and checks the voltage on power capacitor. If the power capacitors get
discharged it means that the main contactor is open.
Troubleshooting
LC contacts are not working. Replace the LC.
If LC contacts are working correctly, contact a Zapi technician.
CONTROLLER MISM. (MDI/LED code = 12)
Cause
The software is not compatible with the hardware. Each controller produced is
“signed” at the end of line test with a specific code mark saved in EEPROM
according to the customized part number.
According with this “sign”, only the customized firmware can be uploaded.
Troubleshooting
Upload the correct firmware.
Ask for assistance to a Zapi technician in order to verify that the firmware is
correct.
CTRAP THRESHOLD (MDI/LED code = 99)
Cause
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