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H2B USER'S MANUAL - 550145G
10) INCORRECT START
An incorrect starting sequence.
The machine only starts if the sequence is followed: key-handle (or seat) - running.
Possible causes:
a) Running microswitch or handle microswitch stuck.
b) Error in sequence made by the operator, pedal pressed at the key on.
c) Incorrect wiring if there is not any defects externally is necessary to replace the
logic..
11) FORW + BACK
The test is carried out continuously. An alarm is signalled when two requests for running
are made simultaneously. Possible causes:
a) Defective wiring.
b) Running microswitch stuck.
c) Incorrect manoeuvre.
d) If there is not external defects, replace the logic.
12) VACC NOT OK
The test is made in standby.
The alarm indicates that the accelerator voltage is greater than 1V with respect to the
minimum value stored. Possible causes:
a) A potentiometer wire is interrupted or the potentiometer negative has not been
connected to the PIN C2 of the logic board. In this case it is generated an alarm
because the logic don’t find the load on the pin C2.
b) The potentiometer is not correctly calibrated.
c) The potentiometer is defective (interrupted).
13) STBY I HIGH
Test carried out in standby. Checks that the current is nil.
If this is not verified, an alarm is signalled. This alarm inhibits machine operation. Pos-
sible causes:
a) Current sensor broken and logic failure.
First replace the logic, and if the defect persists, replace the power unit.
14) I=0 EVER
Test carried out in running.
Checks that the current during running is greater than a minimum value. If not, an
alarm is signalled and the machine is shut down. Possible causes:
a) The current sensor is faulty. Replace the power unit.
b) Wrong connections of the motor cables to the power bars SH- and SH+.
15) EEPROM PAR.KO
Fault in the area of memory in which the adjustment parameters are stored. This alarm
inhibits machine operation. If the defect persists when the key is switched off and on
again, replace the logic. If the alarm disappears, remember that the parameters stored
previously have been cancelled and replaced by the default values.
