communication cable
of the charging
module
Damaged output DC
contactor
Replacing the DC Contactor
Replace DC fuse; check DC
output for short circuit fault
Check whether the lightning
protection fault alarm cable is
properly connected
Replace the monitoring unit
The communication
cable between the
master and slave
monitoring units is
faulty
Check whether the
communication cable connection
between the two monitoring units
is normal
The front door or the
left and right doors
are not closed
Check whether the fault
disappears after the front door or
the left and right doors are
closed
The insulation of the
positive or negative
output of the charge
gun and the ground is
reduced
Use a multimeter to measure
whether the impedance between
the positive and negative poles
of the DC output to PE is greater
than 40K. If it is lower than this
value, please troubleshoot or
replace the charge cable.
System cooling fan
failure
Maintain or replace the system
cooling fan
System over
temperature
protection
Check whether the air inlet and
outlet of the system are blocked
Note: When the high-voltage power distribution of the upstream transformer of the
charging equipment is cut off, the MCCB Q1 in the charging equipment should be
disconnected immediately to prevent the voltage shock causing damage to the charging
equipment after the high-voltage power distribution of the upstream transformer is restored.
damage. Please wait for the high voltage distribution of the upstream transformer to be
restored before restoring the power supply to the charging equipment.
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