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Troubleshooting:
Check both the electric and the mechanical functionality of the encoder.
Check the wires crimping.
Check the mechanical installation of the encoder, if the encoder slips inside its
housing it may raise this alarm.
The electromagnetic noise on the sensor can be a cause for the alarm. In this
case try to replace the encoder.
If the problem is still present after replacing the encoder, the failure is in the
controller. Replace it.
EPS RELAY OPEN (MDI/LED code = 70)
Cause:
The controller receives from EPS information about the safety contacts being
open.
Troubleshooting:
Verify the EPS functionality.
PUMP INC START (MDI/LED code = 79)
Cause:
Man-presence switch is not enabled at pump request.
Troubleshooting:
- Check wirings.
- Check 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.
EVP COIL OPEN (MDI/LED code = 9)
Cause:
No load is connected between the NEVP output (pin A23) and the electrovalve
positive terminal.
Troubleshooting:
Check the EVP condition.
Check the EVP wiring.
If the problem is not solved, replace the logic board.
EVP DRIV. SHORT. (MDI/LED code = 9)
Cause
The EVP driver (output NEVP, pin A23) is shorted.
The microcontroller detects a mismatch between the valve set-point and the
feedback of the EVP output.
Troubleshooting
Check if there is a short circuit or a low-impedance conduction path between the
negative of the coil and -B.
Collect information about:
the voltage applied across the EVP coil,
the current in the coil,
features of the coil.
Ask for assistance to Zapi in order to verify that the software diagnoses are in
accordance with the type of coil employed.
AFNZPxxx – DUALACE2 NEW GENERATION – User Manual
Page 132/169
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Troubleshooting
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Do you have a question about the DUALACE2 NEW GENERATION and is the answer not in the manual?
Questions and answers
Como comprobar el funcionamiento del controlador dualac2 sin display
You can check the operation of the Zapi DUALACE2 NEW GENERATION controller without a display using the following methods:
1. Zapi Smart Console – Connect the Zapi Smart Console to the CAN bus to access diagnostics and parameter settings.
2. PC CAN Console – Use the PC CAN Console software to monitor and adjust controller settings.
3. Self-Diagnosis Feature – The controller performs self-diagnosis, and faults can be displayed using Zapi tools.
4. Alarm History Log – Check the log of alarms to review past faults and system behavior.
5. TESTER Function – Use the TESTER function to monitor key operational readouts.
These methods allow you to diagnose and verify the controller’s operation without an external display.
This answer is automatically generated
A brumby electrical truck that has a zapi inv.dace2, records the failure 244 "Warning Slave It depends on the supervisor uc", and the alarm 248 "Mc is Opened, eb is applied". On the other hand, the LED does not turn on, but in the manual I did not find the LED code. I would like more certainty about whether the failure is from the controller and the LED code for this Zapi model.
Failure 244 "Warning Slave" depends on the supervisor microcontroller (µC). No specific effect or troubleshooting steps are provided in the available context.
Alarm 248 "MC is Opened, EB is Applied" indicates that the main contactor (MC) is open, and the electric brake (EB) is applied. This typically occurs during start-up, standby, or other system states.
The LED code for this model is not explicitly provided in the available context.
This answer is automatically generated