zappi blink code hope this helps
5.4 H2B TRACTION DIAGNOSIS
Description of the alarms signalled by the diagnostic LED.
The alarm code is shown in parentheses.

1 BLINK = Logic anomaly (EEPROM DATA KO, EEPROM PAR. KO,
EEPROM CONF. KO, EEPROM OFF-LINE, CHOPPER NO CONF,
WATCH-DOG).

2 BLINKS = Running request on startup or error in handle/speeds sequence
(INCORRECT START).

3 BLINKS = Error on VMN test (NO FULL CONDUCTION, VMN LOW)
.
4 BLINKS = Accelerator high in standby - this error inhibits operation (VACC NOT OK)
.
5 BLINKS = Error in reading current - this error inhibits operation (I HIGH AT STAND,
I=0 EVER
6 BLINKS = Malfunctioning of the contactor driver circuit (DRIVER SHORTED,
COIL SHORTED).

7 BLINKS = Excessive temperature, greater than 80°C (TH. PROTECTION).

8 BLINKS = Contactors do not open or VMN high in standby (BRAKE CONT. OPEN,
DIR CONT. OPEN, VMN HIGH).

9 BLINKS = Contact stuck (BRAKE CON CLOSED) only for regenerative;
(DIR. CON CLOSED) only standard traction.

CONTINUOUS BLINKING (32 BLINKS) = Low battery charge, battery with <10% of
residual charge (BATTERY)
.
LED REMAINS ON = Double running request (FORW BACK).
H2B standard traction