Alarm
ID
Alarm
Name
Alarm
Severity
Possible Cause Suggestion
2038 Unstable
Grid
Frequenc
y
Major Cause ID = 1
Power grid exception: The actual
grid frequency change rate does
not comply with the local power
grid standard.
1. If the alarm occurs
occasionally, the power grid
may be abnormal
temporarily. The solar
inverter automatically
recovers after detecting that
the power grid becomes
normal.
2. If the alarm occurs
frequently, check whether the
grid frequency is within the
acceptable range. If not,
contact the local power
operator.
2039 Output
Overcurr
ent
Major Cause ID = 1
The power grid voltage drops
dramatically or the power grid is
short-circuited. As a result, the
solar inverter transient output
current exceeds the upper
threshold and therefore the solar
inverter protection is triggered.
1. The solar inverter detects
its external working
conditions in real time.
After the fault is rectied,
the solar inverter
automatically recovers.
2. If the alarm occurs
frequently and
aects the
energy yield of the PV
plant, check whether the
output is short-circuited. If
the fault cannot be
rectied, contact your
dealer or technical
support.
2040 Output
DC
Compone
nt
Overhigh
Major Cause ID = 1
The DC component of the solar
inverter output current exceeds
the specied upper threshold.
1. If the exception is caused
by an external fault, the
solar inverter
automatically recovers
after the fault is rectied.
2. If the alarm occurs
frequently, contact your
dealer or technical
support.
SUN2000-(100KTL, 110KTL, 115KTL)-M2
User Manual 8 Maintenance
Issue 02 (2022-06-30) Copyright © Huawei Technologies Co., Ltd. 98
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