Huawei SUN2000-55KTL Series User Manual page 103

SUN2000-(55KTL, 60KTL) Series
User Manual
Alarm ID Alarm
Name
106–113 Abnormal
String
1–8
120–127 String
1–8
Reversed
Issue 06 (2020-01-03)
Alarm Possible Cause
Severity
Warning Cause ID = 1
 The PV string is shielded
from sunlight for a long
time.

The PV string deteriorates
or is damaged.

Cause ID Cause ID = 1
= 1:
The PV string is reversely
Major
connected.
Cause ID

Cause ID = 2
= 2:
Only a few PV modules are
Warning
connected in series to the
PV string, and therefore the
end voltage is lower than
that of other PV strings.
Copyright © Huawei Technologies Co., Ltd.
8 System Maintenance
Suggestion
1. Check whether the PV string
current is obviously lower than
the currents of other PV strings.
2. If yes, check whether the PV
string is shielded from sunlight.
3. If the PV string is clean and not
shielded from sunlight, check
whether any PV module is faulty.

Cause ID = 1
Check whether the PV string is
reversely connected to the
inverter. If yes, turn off the two
DC switches after the PV string
voltage drops within the safe
voltage range (lower than 60 V
DC), and then correct the PV
string connection.
 Cause ID = 2
Check whether the number of PV
modules connected in series to
the inverter is small. If yes,
increase the number.
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