Alarm ID Alarm
Name
Alarm
Severity
Possible Causes Troubleshooting
2011 String
Reversed
Major The PV string is reversely
connected.
Cause ID = 1, 2, 3
● 1: PV1 is reversely
connected.
● 2: PV2 is reversely
connected.
● 3: PV3 is reversely
connected.
1. Check whether the PV string
is reversely connected to the
device. If yes, wait until the
PV string current decreases
below 0.5 A, set the DC
SWITCH to OFF, and adjust
the PV string polarity.
2. If the fault persists, reset the
device on the local
maintenance app or WebUI
of the upper-layer controller.
Alternatively, you can turn o
the AC and DC switches, wait
for 5 minutes, and then turn
on the AC and DC switches.
2021 AFCI
Check
Failure
Major The AFCI check fails.
Cause ID = 1, 2
● 1: The AFCI check circuit
is abnormal.
● 2: The AFCI circuit is
faulty.
Turn o the AC output switch
and DC input switch, and then
turn them on after 5 minutes. If
the fault persists, contact your
dealer or technical support.
2032 Grid
Failure
Major Cause ID = 1
● The power grid
experiences an outage.
● The AC circuit is
disconnected or the AC
circuit breaker is OFF.
1. Check the AC voltage.
2. Check whether the AC circuit
is disconnected or the AC
circuit breaker is OFF.
SUN2000-(8K, 10K)-LC0 Series
User Manual 8 System Maintenance
Issue 01 (2023-09-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 93
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