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NetCol8000-C(070-260) In-room Chilled Water Smart
Cooling Product
User Manual
6 System Operation and Maintenance
Issue 06 (2020-01-13)
Copyright © Huawei Technologies Co., Ltd.
234
Alarm ID
Alarm Name
Alarm
Severity
Impact
Possible
Cause
Solution
detection
board are
loose or
damaged.
3.
The SPD
and voltage
detection
board is
faulty.
connection
to the SPD
and voltage
detection
board.
3.
Replace the
SPD and
voltage
detection
board.
Backup power
voltage
abnormal
Major
An alarm is
triggered, and
the smart
cooling product
is shut down
when the
standby power
is supplied.
1.
The power
supply
voltage is
below the
lower
threshold.
2.
The cables
to the SPD
and voltage
detection
board are
loose or
damaged.
3.
The SPD
and voltage
detection
board is
faulty.
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.
A281-20
Power voltage
abnormal
Major
An alarm is
triggered, and
the smart
cooling product
is shut down
when the main
power or single
power is
supplied.
1.
The power
supply
voltage
exceeds the
upper
threshold.
2.
The SPD
and voltage
detection
board is
faulty.
1.
Check that
the power
supply
voltage is
within the
operating
range.
2.
Replace the
SPD and
voltage
detection
board.
Backup power
voltage
abnormal
Major
An alarm is
triggered, and
the smart
cooling product
is shut down
when the
standby power
is supplied.
1.
The power
supply
voltage
exceeds the
upper
threshold.
2.
The SPD
and voltage
detection
1.
Check that
the power
supply
voltage is
within the
operating
range.
2.
Replace the
SPD and