81
No. Fault name Common causes Corrective measures
7
Battery-side
voltage
imbalance
Caused by an imbalance
between the positive and
negative battery voltage
inside the machine.
The machine will normally run
again after waiting a few minutes
for it to return to normal, if the fault
recurs.
Check if the battery-side half-bus
is short-circuited and if BAT+,
BAT- and N on the volume control
board are short-circuited.
If it is the above problem, consider
whether the IGBT module is
straight through, suggest
replacing the main power board;
confirm that it is not the above
reason, consider driving
abnormality, check whether the
wiring between the control board
and the power is correct, if it is
normal, suggest replacing the
main power board and control
board.
8
Battery-side
current
overcurrent
Battery-side current
overcurrent.
Generally wait a few minutes to
return to normal after the machine
will run again, if the fault recurs:
consider sampling abnormalities,
check whether the shunt
resistance is abnormal, no then
replace the control board.
Operation & Maintenance Instruction 5 Troubleshooting
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