Alarm
ID
Alarm
Name
Alarm
Severit
y
Possible Causes Suggestions
2014 High
Input
String
Voltage
to
Ground
Major Cause ID = 1
The voltage between the input PV
string and the ground is
abnormal, and there is a risk of
power attenuation.
1. If no PID compensation
device exists in the system,
disable the PID protection
function at night. Note: If
the PID protection function
is disabled but reactive
power compensation at
night is enabled, PV
modules may attenuate.
2. If there is a PID
compensation device in the
system, check whether it is
faulty. If yes, rectify the
fault.
3. Check whether the settings
of compensation direction
for the solar inverter and
the PID device are
consistent. If not, set them
to be consistent based on
the PV module model.
(Note: If the PV– is set to
positive
oset, the voltage
between the solar inverter
PV– and the ground should
be greater than 0 V to
clear the alarms; if the PV+
is set to negative
oset,
the voltage between the
solar inverter PV+ and the
ground should be less than
0 V to clear the alarms.)
4. If the alarm persists,
contact Huawei technical
support.
2015
PV
String
Loss
Warnin
g
Cause ID = 1–20
This alarm is generated when the
PV string status is abnormal due
to the following conditions: a
single PV string is lost; both 2-
in-1 PV strings are lost; one of the
2-in-1 PV strings is lost.
1. Check whether the solar
inverter terminals are
properly connected.
2. Check whether the PV
string terminals are
properly connected.
3. If a 2-in-1 terminal is used,
check whether it is normal.
SUN2000-(75KTL, 100KTL, 110KTL, 125KTL) Series
User Manual 8 Maintenance
Issue 11 (2021-11-10) Copyright © Huawei Technologies Co., Ltd. 113
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