HAKO 7580.02, Service Booklet

Page: 72 / 116

Foil 72
9.2.3 ZAPI Controller
9) VACC NOT OK
Test in rest state;
An alarm is displayed if the potentiometer voltage is higher than 1V, related to the saved minimum
value.
Possible causes:
a) One of the wires at the potentiometer or inductive sensor is broken.
b) Potentiometer or inductive sensor ist defective.
10) I=0 EVER
Test during ride;
If, during ride, the current does not exceed a determined minimum value, the error message appears
and the system switches off.
Possible causes :
a) Resistance of the motor is excessive due to motor defect or faulty carbon brush
contact
b) Current sensor is defective (replace controller)