Huawei SUN2000 M5 Series 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 M5 Series Specifications

General

Max Efficiency	98.6%
Max Input Voltage	1100 V
MPPT Operating Voltage Range	200 V - 1000 V
Operating Temperature Range	-25°C to +60°C
Communication	RS485, 4G (optional)