Alarm
ID
Alarm Name Alarm
Severity
Possible Causes Troubleshooting
2011 String Reversed Major The PV string is reversely
connected.
Cause ID = 1, 2
● 1: PV1 is reversely
connected.
● 2: PV2 is reversely
connected.
Check whether the PV
string is reversely
connected to the SUN2000.
If yes, wait until the PV
string current decreases
below 0.5 A, set DC switch
to OFF, and adjust the PV
string polarity.
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 Huawei 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-(2KTL-6KTL)-L1
User Manual 8 System Maintenance
Issue 10 (2023-02-13) Copyright © Huawei Technologies Co., Ltd. 91
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