Huawei NetCol8000-A Series User Manual page 182

NetCol8000-A(050, 100) In-room Air Cooled Smart
Cooling Product
User Manual
Alar
m ID
a036
a037
a042
Issue 12 (2020-10-28)
Alarm Alar Occurren
Name m ce
Sever Condition
ity s
Power Critic Any of
phase al three
loss phase AC
voltages is
50 V or
less when
the alarm
detection
delay
expires.
Power Critic The surge
phase al protection
reverse and
filtering
board
detects an
incorrect
angle
among
three
phases
when the
alarm
detection
delay
expires.
Remot Critic The
e al remote
shutdo power-off
wn switch
polarity is
different
from the
preset
polarity.
Copyright © Huawei Technologies Co., Ltd.
7 System Operation and Maintenance
Possible Causes
1. The power grid is
unstable.
2. The surge
protection board is
faulty if
configured.
3. The main power
supply or the comp
driver supply is
connected
improperly.
1. The power grid is
unstable.
2. The surge
protection board is
faulty.
1. The remote
shutdown dry
contact is
triggered.
2. The cables to the
remote shutdown
dry contact is
faulty.
Solutions
1. Check the
power grid.
2. Maintain or
replace the
surge
protection
board.
3. Check the
main power
supply or
cables to the
comp driver.
1. Check the
power grid.
2. Maintain or
replace the
surge
protection
board.
1. Check the
status of the
remote
shutdown dry
contact.
2. Check the
cables to the
remote
shutdown dry
contact.
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