Alarm ID
Alarm Name
Alarm
Severity
Possible Causes
Procedure
412177009 Input power failed
Critical
The L1, L2, and L3
power input voltages
are all below 20 V.
● Check the input
voltage of each
phase.
● Use the power
supply with a
normal input
voltage.
412177010
-41217701
2
L1/L2/L3 overvoltage
Critical
The voltage is greater
than 120% of the
rated voltage.
● Check the power
input.
● Use the power
supply with a
normal input
voltage.
412177013
-41217701
5
L1/L2/L3 undervoltage Critical
The voltage is below
the undervoltage
threshold.
Check the power
input.
412177016 Input frequency high
Major
The frequency
exceeds the threshold.
Check the power
input.
412177017 Input frequency low
Major
The frequency is
below the threshold.
Check the power
input.
412177018
-41217702
0
L1/L2/L3 overloaded
Critical
The current exceeds
the threshold.
Check the power of all
output loads.
412177027
-41217702
9
Max. L1/L2/L3 current
exceed
Major
The current is greater
than 80% of the rated
current and less than
the rated current.
Check the power of all
output loads.
412177036
-41217703
8
Min. L1/L2/L3 current
exceed
Major
The current is greater
than 60% of the rated
current and less than
80% of the rated
current.
Check the power of all
output loads.
412177045 Main input 3-phase
cur. imb.
Warning
The three-phase (L1,
L2, and L3) current
imbalance is greater
than 15%.
Check all output loads
and balance the loads
of phases L1, L2, and
L3.
412177052 Main input THDu high Warning
The THDu on the
main circuit is 30%
higher than the rated
voltage.
Check that the THDu
on the main circuit is
30% higher than the
rated voltage.
New Main Way 2.0
User Manual
7 Alarm List
Issue 05 (2020-10-15)
Copyright © Huawei Technologies Co., Ltd.
52