Huawei SUN2000-50KTL-ZHM3 User Manual page 79

SUN2000-(50KTL-ZHM3, 50KTL-M3)
User Manual
ID Name
2067 Faulty
power
collector
61440 Faulty
monitorin
g unit
2072 Transient
AC
overvolta
ge
2080 Abnormal
PV
module
configurat
ion
Issue 01 (2022-07-29)
Severity Cause
Major Cause ID = 1
The power meter is
disconnected.
Minor Cause ID = 1
The flash memory is

insufficient.
The flash memory has bad

sectors.
Major Cause ID = 1
The inverter detects that the
phase voltage exceeds the
transient AC overvoltage
protection threshold.
Major Cause ID = 1

The number of optimizers
connected to the inverter
exceeds the upper
threshold.
Cause ID = 2

The PV string power or the
number of optimizers
connected in series in a PV
string exceeds the upper
threshold.
Cause ID = 3

The number of optimizers
connected in series in a PV
string is less than the lower
threshold, the PV string
output is reversely
connected, or the output of
some optimizers in the PV
Copyright © Huawei Technologies Co., Ltd.
Solution
1. Check whether the configured
power meter model is the same as
the actual model.
2. Check whether the
communications parameters of
the power meter are the same as
the RS485 configurations of the
inverter.
3. Check whether the power meter is
powered on and whether the
RS485 communications cable is
connected.
Turn off the AC output switch and
DC input switch, and then turn them
on after 5 minutes. If the alarm
persists, replace the monitoring
board or contact your dealer or
Huawei technical support.
1. If the voltage at the grid
connection point is too high,
contact the local power operator.
2. If you have confirmed that the
voltage at the grid connection
point exceeds the upper threshold
and obtained consent from the
local power operator, modify the
overvoltage protection thresholds.
3. Check whether the peak grid
voltage exceeds the upper
threshold.
Check whether the total number of
PV modules, number of PV modules
in a PV string, and number of PV
strings meet requirements and
whether the PV module output is
reversely connected.
Cause ID 1: Check whether the

total number of optimizers
exceeds the upper threshold.
Cause ID 2: Check whether the

PV string power or the number of
PV strings connected in series
exceeds the upper threshold.
Cause ID 3:

1. Check whether the number of
optimizers connected in series
in the PV string is below the
lower threshold.
2. Check whether the PV string
8 Maintenance
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