Huawei PV+ESS+Charger Solution - Page 73

No. Component Alarm Name Alarm
Sev
erity
Possible
Cause
Suggestion
11 AC Charger Input
Undervoltage
Minor The mains or
inverter
power supply
is unstable.
Step 1 Check whether the input
voltage is abnormal.
If yes, rectify the mains input
circuit and ensure that the
voltage is normal. If the alarm
persists, go to the next step.
If no, go to the next step.
Step 2 Restart the charger, wait
for 1 minute, and check
whether the alarm is cleared.
If yes, no further action is
required.
If no, replace the charger.
12 AC Charger Input
Overvoltage
Minor The mains or
inverter
power supply
is unstable.
Step 1 Check whether the input
voltage is abnormal.
If yes, rectify the mains input
circuit and ensure that the
voltage is normal. If the alarm
persists, go to the next step.
If no, go to the next step.
Step 2 Restart the charger, wait
for 1 minute, and check
whether the alarm is cleared.
If yes, no further action is
required.
If no, replace the charger.
PV+ESS+Charger Solution
User Manual 5 Maintenance
Issue 02 (2023-01-13) Copyright © Huawei Technologies Co., Ltd. 67