Huawei SCharger-7KS-S0 User Manual page 21

Symptom Possible Cause
Input overvoltage occurs. The AC voltage is
greater than 276 V.
Input undervoltage occurs. The AC voltage
is less than 184 V.
A phase fails in the three-phase input if the
voltage of a phase is smaller than 50 V.
(The input status is normal when the voltages
of all the three phases are greater than 60 V
after the system is powered on.)
The indicator
is flashing red.
Charger overheat protection is triggered.
The charging connector is unplugged in an
incorrect way.
Overcurrent protection is triggered.
Solution
Check whether the input voltage is within the
normal range.
Check whether the input voltage is within the
normal range.
Check whether the three-phase input voltage is
within the normal range.
Ensure that the charger is not covered. Check that
there is no heat source around the charger and that
the ambient temperature is in the allowed range.
Remove and replug the charging connector.
Reduce the charging current of the vehicle or consult
the after-sales service of the vehicle.
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