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NetCol8000-C(070-260) In-room Chilled Water Smart
Cooling Product
User Manual
Alarm ID
Alarm Name
A27F-02
Water overflow
alarm
A280-01
Power
frequency
abnormal
Backup power
frequency
abnormal
A280-02
Power
frequency
abnormal
Issue 06 (2020-01-13)
Alarm
Impact
Severity
Critical
An alarm is
triggered, and
all the parts
expect for
indoor fans are
shut down.
Major
An alarm is
triggered, and
the smart
cooling product
is shut down
when the main
power or single
power is
supplied.
Major
An alarm is
triggered, and
the smart
cooling product
is shut down
when the
standby power
is supplied.
Major
An alarm is
triggered, and
the smart
cooling product
is shut down
when the main
power or single
power is
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible
Solution
Cause
liquid level
sensor,
check its
cable
connections,
clear the
obstacles, or
replace it.
The water
While
overflow sensor
configuring the
detects water or
water overflow
the sensor is
sensor, check
faulty.
and clear the
water source,
and maintain or
replace the
sensor.
1. The power
1. Check that
supply
the power
frequency is
supply
below the
voltage is
lower
within the
threshold.
operating
range.
2. The SPD
and voltage
2. Replace the
detection
SPD and
board is
voltage
faulty.
detection
board.
1. The power
1. Check that
supply
the power
frequency is
supply
below the
voltage is
lower
within the
threshold.
operating
range.
2. The SPD
and voltage
2. Replace the
detection
SPD and
board is
voltage
faulty.
detection
board.
1. The power
1. Check that
supply
the power
frequency
supply
exceeds the
voltage is
upper
within the
threshold.
operating
range.
2. The SPD
and voltage
2. Replace the
detection
SPD and
231
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