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User’s Manual
23
5 Troubleshooting
The EV Charger is automatically protected in case of fault. General faults and the solutions are as
follows.
Table 5-1 Faults and solutions
Fault LCD Screen Message Solution
LCD screen is
off
None
Check whether the power supply and
distribution are normal.
Check whether the branch breaker is tripped.
Close the breaker after troubleshooting.
Check whether the connection is correct. If the
cable comes off, properly connect the cable.
CP failure
EV Communication
Error
Check whether the adapter is properly connected to
the electric vehicle. Pull and plug the adapter and try
charging again.
Emergency
stop
E-stop
Check whether the EV Charger is working properly,
and rotate the emergency button.
Undervoltage
fault
Under Voltage
Check whether the input cable is reliably
connected.
Check whether the parent grid is properly
connected.
Check whether the grid voltage is abnormal.
Overvoltage
fault
Over Voltage
Check whether the input cable is connected
correctly.
Check whether the grid voltage is abnormal.
Overtemperat
ure fault
High Temperature
Check whether the EV Charger is covered or installed
in a high-temperature environment.
Meter failure Power Meter Failure Power off, and then restart the device.
Leakage fault LeakageRcmuError
Check whether the charging adapter and its cable are
damaged or wet. Recover after pulling out the
adapter.
Overcurrent
fault
Over Current Failure
Check whether the charging adapter is correctly
connected to the vehicle.
Check whether the charger on the vehicle is
normal.
Vehicle has no
diode
EV Communication
Error
The vehicle does not conform to standards, and
cannot be charged.
Relay sticking
fault
Power Switch Failure
The device is damaged, and needs to be returned to
the factory for repair.
Ground fault Ground Failure
The EV Charger is not grounded, so the circuit needs
to be tested.
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