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NetCol8000-C(070-260) In-room Chilled Water Smart
Cooling Product
User Manual
Alarm ID
Alarm Name
Indoor fan 4
fault
A080-01
CW valve
exceed runtime
alarm
A091-01
Cold aisle low
temperature
alarm
Issue 06 (2020-01-13)
Alarm
Impact
Severity
Major
An alarm is
triggered, and
the
corresponding
fan is shut
down.
Warning
An alarm is
triggered.
Warning
N/A
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible
Solution
Cause
1. The indoor
1. Check the
fan ground
ground cable
cable is
connection
loose or
to the indoor
damaged.
fan.
2. The indoor
2. Maintain or
fan is faulty.
replace the
indoor fan.
The
Maintain or
accumulated
replace the
runtime of the
chilled water
chilled water
valve and clear
valve exceeds
the accumulated
runtime.
the alarm
threshold.
1. The
1. Adjust the
temperature
positions of
sensors or
the
temperature
temperature
and
sensors or
humidity
temperature
sensors are
and
located in
humidity
inappropriat
sensors.
e positions.
2. Contact
2. The thermal
Huawei
load power
technical
is low.
support.
3. The ambient
3. Measure the
temperature
ambient
is below the
temperature.
lower
Check
threshold.
whether
other causes
4. The low
exist if the
temperature
alarm
alarm
persists in a
threshold is
long time
inappropriat
after startup.
e.
4. Adjust the
5. The value
low
detected by
temperature
the
alarm
temperature
threshold.
sensor or
temperature
5. Calibrate or
and
replace the
humidity
temperature
sensor is
sensor or
different
temperature
from the
and
209
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