Huawei SUN2000-4.95KTL-JPL1 User Manual

Step 3 Turn o the DC switch at the bottom of the solar inverter.
Step 4 Turn o the DC switch between the PV string and the solar inverter if there is any.
Step 5 Turn o the DC switch on the battery if there is any.
----End
8.3 Troubleshooting
Alarm severities are dened as follows:
● Major: The solar inverter enters the shutdown mode and disconnects from the
power grid to stop generating power after a fault occurs.
● Minor: Some components are faulty but the solar inverter can still connect to
the power grid and generate power.
● Warning: The solar inverter output power decreases 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 open-circuit
voltage exceeds the
maximum SUN2000
operating voltage.
Cause ID = 1, 2
● Cause ID 1: The PV1
input voltage is high.
● Cause ID 2: The PV2
input voltage is high.
Check the serial connection
conguration of the PV
string and ensure that the
PV string open-circuit
voltage is not greater than
the maximum operating
voltage of the SUN2000.
After the PV array
conguration is corrected,
the alarm disappears.
2002 DC Arc Fault Major The PV string power cables
arc or are in poor contact.
Cause ID = 1, 2
● Cause ID 1: PV1 DC arc
fault
● Cause ID 2: PV2 DC arc
fault
Check whether the string
cables arc or are in poor
contact.
SUN2000-4.95KTL-JPL1
User Manual 8 Maintenance
Issue 05 (2023-02-17) Copyright © Huawei Technologies Co., Ltd. 71

Huawei SUN2000-4.95KTL-JPL1 Specifications

General

Brand	Huawei
Model	SUN2000-4.95KTL-JPL1
Category	Inverter
Language	English