Huawei NetCol8000-C070 User Manual page 168

NetCol8000-C(070, 130, 190) In-room Chilled Water
Smart Cooling Product
User Manual
Alarm ID Alarm Name
A280-01 Power frequency
abnormal
Backup power
frequency abnormal
A280-02 Power frequency
abnormal
Backup power
frequency abnormal
A281-04 Power voltage
abnormal
A281-08
Backup power voltage
A281-10
abnormal
A281-20 Power voltage
abnormal
A281-40
Backup power voltage
A281-80
abnormal
A282-01 Power phase sequence
abnormal
Backup power phase
sequence abnormal
Issue 07 (2021-12-30)
Alarm
Severity
Major
Major
Major
Major
Major
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
● The power supply
frequency is below
the lower
threshold.
● The SPD and
voltage detection
board is faulty.
● The power supply
frequency exceeds
the upper
threshold.
● The SPD and
voltage detection
board is faulty.
● The power supply
voltage is below
the lower
threshold.
● The cables to the
SPD and voltage
detection board are
loose or damaged.
● The SPD and
voltage detection
board is faulty.
● The power supply
voltage exceeds the
upper threshold.
● The SPD and
voltage detection
board is faulty.
● The power grid is
unstable.
● The SPD and
voltage detection
board may be
faulty if it is
configured.
6 Maintenance
Solution
1. Check the power
supply frequency,
and ensure that it
is within the
working range.
2. Replace the SPD
and voltage
detection board.
1. Check the power
supply frequency,
and ensure that it
is within the
working range.
2. Replace the SPD
and voltage
detection board.
1. Check that the
power supply
voltage is within
the operating
range.
2. Check the cable
connection to the
SPD and voltage
detection board.
3. Replace the SPD
and voltage
detection board.
1. Check that the
power supply
voltage is within
the operating
range.
2. Replace the SPD
and voltage
detection board.
1. Check the power
grid.
2. Maintain or replace
the SPD and
voltage detection
board.
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