Huawei SUN2000-12KTL-M5 User Manual

8.3 Troubleshooting
NO TE
Contact your dealer if all failure analysis procedures listed above are completed and the
fault still exists.
Alarm severities are dened as follows:
● Major: The inverter is faulty. As a result, the output power decreases or the
grid-tied power generation is stopped.
● Minor: Some components are faulty without aecting the grid-tied power
generation.
● Warning: The inverter works properly. The output power decreases or some
authorization functions fail due to external factors.
Table 8-2 Common alarms and troubleshooting measures
Alarm
ID
Alarm
Name
Alarm
Severity
Possible Causes Troubleshooting
2001 High
string
input
voltage
Major The PV array is not
properly
congured.
Excessive PV
modules are
connected in series
to the PV string,
and therefore the
PV string open-
circuit voltage
exceeds the
maximum inverter
operating voltage.
● Cause ID 1: PV
strings 1 and 2
● Cause ID 2: PV
strings 3 and 4
Reduce the number of PV modules
connected in series to the PV string until
the PV string open-circuit voltage is less
than or equal to the maximum inverter
operating voltage. After the PV string
conguration is corrected, the alarm
disappears.
2003 DC arc
fault
Major The PV string
power cables arc or
are in poor contact.
Cause ID 1–4: PV
strings 1–4
Check whether the PV string cables arc
or are in poor contact.
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 8 Maintenance
Issue 03 (2023-02-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 67

Huawei SUN2000-12KTL-M5 Specifications

General

Brand	Huawei
Model	SUN2000-12KTL-M5
Category	Inverter
Language	English