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5. LOGIC FAILURE #3
Fault in the hardware section of the logic board which manages the hardware current
protection. Replace the logic board.
6. INCORRECT START
This alarm signals an incorrect starting sequence. Possible causes:
a. running microswitch failure;
b. error in sequence made by the operator;
c. incorrect wiring;
d. if the default persists, replace the logic.
7. CAPACITOR CHARGE
Follows the charging capacitor system:
When the key is switched ON, the inverter tries to charge the capacitors through a
power resistance and check if the capacitors are charged within a timeout. If this is not
true: an alarm is signalled; the main contactor is not closed.
Possible reasons:
a) check if the charging resistance is opened.
b) The charging circuit has a failure.
c) There is a problem on the power modules.
8. VMN LOW, VMN HIGH
The test is carried out during initial diagnosis and in standby.
Possible causes:
a. problem with the motor connections or the motor power circuit; check if the 3 phases
are correctly connected; check if there's a dispersion of the motor towards ground;
b. chopper failure, replace it.
9. PEDAL WIRE KO
This alarm is signalled if a fault is detected in the accelerator wiring (NPOT or PPOT
cable is interrupted).
10. VACC NOT OK
The test is made in standby. This alarm indicates that the accelerator voltage is 1V
greater than the minimum value programmed by the PROGRAM VACC function.
Possible causes:
a. the potentiometer is not correctly calibrated;
b. the potentiometer is defective.
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