Alarm
ID
Alarm
Name
Alarm
Severity
Possible Cause Suggestion
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 fault occurs
frequently, contact
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-(100KTL, 110KTL, 115KTL)-M2
User Manual 8 Maintenance
Issue 02 (2022-06-30) Copyright © Huawei Technologies Co., Ltd. 94
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