HAKO 7580.02, Сервисная книжка

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Foil 75
9.2.3 ZAPI Controller
15) DRIVER 1 KO
If voltage at the NT1 terminal (A11) does not correspond to the desired value, an alarm is output and
the system switches off.
Possible causes:
a) Wire at the NT1 terminal (A11) broken or coil of the direction contactor
for reverse ride is defective.
b) Internal driver MOSFET short-circuited (replace controller!)
16) DRIVER 1 SIC KO
If current load at the contactor driver which activates the NT1 output (A11) is excessive, an alarm is
output and the system switches off.
Possible causes :
a) Short-circuit of the wire at NT1 terminal (A11) to +Batt
b) Coil of the connected contactor short-circuited or current consumption > 5A