Huawei NetCol8000-A Series User Manual page 179

NetCol8000-A(050, 100) In-room Air Cooled Smart
Cooling Product
User Manual
Alar
m ID
a028
a029
a030
Issue 12 (2020-10-28)
Alarm Alar Occurren
Name m ce
Sever Condition
ity s
Power Major The AC
phase voltage of
A phase A is
overvo greater
lt than the
alarm
threshold,
and the
alarm
detection
delay
expires.
Power Major The AC
phase voltage of
B phase B is
overvo greater
lt than the
alarm
threshold,
and the
alarm
detection
delay
expires.
Power Major The AC
phase voltage of
C phase C is
overvo greater
lt than the
alarm
threshold,
and the
alarm
detection
delay
expires.
Copyright © Huawei Technologies Co., Ltd.
7 System Operation and Maintenance
Possible Causes
1. The power supply
voltage is higher
than the power
overvolt alarm
thres.
2. If a voltage jumper
is used, possibly it
is incorrectly
connected.
3. If a toggle switch is
used, possibly it is
incorrectly set.
1. The power supply
voltage is higher
than the power
overvolt alarm
thres.
2. If a voltage jumper
is used, possibly it
is incorrectly
connected.
3. If a toggle switch is
used, possibly it is
incorrectly set.
1. The power supply
voltage is higher
than the power
overvolt alarm
thres.
2. If a voltage jumper
is used, possibly it
is incorrectly
connected.
3. If a toggle switch is
used, possibly it is
incorrectly set.
Solutions
1. Check the
power supply
voltage.
2. Maintain or
replace the
voltage
jumper.
3. Correctly set
the toggle
switch.
1. Check the
power supply
voltage.
2. Maintain or
replace the
voltage
jumper.
3. Correctly set
the toggle
switch.
1. Check the
power supply
voltage.
2. Maintain or
replace the
voltage
jumper.
3. Correctly set
the toggle
switch.
170