EP Equipment CPD30L1-B, Service Manual

Page: 151 / 235

REV. 05/2020
ELECTRICAL SYSTEM
9
139
Error Message
Possible cause Fault elimination
Error
Error text
60
CAPACITOR
CHARGE
When the key is switched on, the
inverter tries to charge the power
capacitors through the series of
a PTC and a power resistance,
checking if the capacitors are
charged within a certain timeout. If
the capacitor voltage results less
than 20% of the nominal battery
voltage, the alarm is raised and the
main contactor is not closed.
- Check if an external load in
parallel to the capacitor bank,
which sinks current from the
capacitors-charging circuit, thus
preventing the caps from charging
well. Check if a lamp or a dc/dc
converter or an auxiliary load is
placed in parallel to the capacitor
bank.
- The charging resistance or PTC
may be broken. Insert a power
resistance across line-contactor
power terminals; if the alarm
disappears, it means that the
charging resistance is damaged.
- The charging circuit has a failure
or there is a problem in the power
section.
Replace the controller.
185 TILLER ERROR
Input mismatch between Hard&Soft
input (A11) and tiller/seat input (A6):
the two inputs are activated at the
same time.
- Check if there are wrong
connections in the external wiring.
- Using the TESTER function,
verify that inputs are in accordance
with the actual state of the external
switches.
- Check if there is a short circuit
between A11 and A6.
- In case no failures/problems
have been found, the problem is
in the controller, which has to be
replaced.
248 NO CAN MSG.
This fault is signaled when there
is no communication with the
supervisor uC.
This type of fault is not related to
external components; replace the
logic board.
210
WRONG RAM
MEM.
The algorithm implemented to
check the main RAM registers
finds wrong contents: the register
is “dirty”. This alarm inhibits the
machine operations.
Try to switch the key off and
then on again, if the alarm is still
present replace the logic board.
74
DRIVER
SHORTED
The driver of the LC coil is shorted.
- Check if there is a short or a low
impedance pull-down between
NLC (A16 (A36) and –BATT.
- The driver circuit is damaged;
replace the logic board.