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NetCol8000-C(070-260) In-room Chilled Water Smart
Cooling Product
User Manual
Alarm ID
Alarm Name
Return air
damper fault
A279-08
Fresh air
damper fault
Return air
damper fault
A27C-01
Return air 1
temp/humid
sensor fault
Return air 2
temp/humid
sensor fault
Issue 06 (2020-01-13)
Alarm
Impact
Severity
Critical
An alarm is
triggered, and
the direct
free-cooling
function is off.
Critical
An alarm is
triggered, and
the direct
free-cooling
function is off.
Critical
An alarm is
triggered.
Major
N/A
Major
N/A
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible
Solution
Cause
damaged.
damper.
2. The air
2. Maintain or
damper is
replace the
faulty.
air damper.
1. The
1. Check the
feedback
feedback
cable to the
cable
air damper is
connection
loose or
to the air
damaged.
damper.
2. The air
2. Maintain or
damper is
replace the
faulty.
air damper.
1. The control
1. Check the
cable to the
control cable
air damper is
connection
loose or
to the air
damaged.
damper.
2. The air
2. Maintain or
damper is
replace the
faulty.
air damper.
1. The control
1. Check the
cable to the
control cable
air damper is
connection
loose or
to the air
damaged.
damper.
2. The air
2. Maintain or
damper is
replace the
faulty.
air damper.
1. The cables
1. Check the
to the
cables to the
temperature
temperature
and
and
humidity
humidity
sensor are
sensor.
loose or
2. Maintain or
damaged.
replace the
2. The
temperature
temperature
and
and
humidity
humidity
sensor.
sensor is
faulty.
1. The cables
1. Check the
to the
cables to the
temperature
temperature
and
and
humidity
humidity
sensor are
sensor.
223
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