Huawei PV+ESS+Charger Solution - Page 71

No. Component Alarm Name Alarm
Sev
erity
Possible
Cause
Suggestion
5 Charging
Connector
Charging
Connector
Lock Faulty
Major The possible
causes are as
follows:
1. The
charging
connector is
not properly
inserted.
2. The
charging
connector
lock control
is faulty.
Step 1 Check whether the
charging connector is
completely inserted into the
charger port.
If yes, go to the next step.
If no, completely insert the
charging connector into the
charger port. If the alarm is
cleared, no further action is
required. If the alarm persists,
go to the next step.
Step 2 Use the app to deliver
the lock and unlock commands
twice, and check whether the
alarm is cleared.
If yes, no further action is
required.
If no, replace the charger.
6 Charging
Connector
Charging
Cable
Abnormal
Major The through-
curr
ent
capability of
the charging
cable is
abnormal.
Step 1 Remove the charging
cable. Use a multimeter to
measure the PP-PE resistance
and check whether the
resistance is 100, 220, 680, or
1500 ohms (±3%).
If yes, replace the charger.
If no, replace the charging
cable. If the alarm persists,
replace the charger.
Figure 5-1 Measuring the
charging cable resistance at the
charger side
PV+ESS+Charger Solution
User Manual 5 Maintenance
Issue 02 (2023-01-13) Copyright © Huawei Technologies Co., Ltd. 65