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NetCol8000-C(070-260) In-room Chilled Water Smart
Cooling Product
User Manual
Alarm ID
Alarm Name
A278-04
Chilled water
valve fault
A278-08
Chilled water
valve fault
A279-01
Motorized
damper fault
A279-02
Motorized
damper fault
Fresh air
damper fault
A279-04
Motorized
damper fault
Fresh air
damper fault
Issue 06 (2020-01-13)
Alarm
Impact
Severity
Major
An alarm is
triggered.
Major
An alarm is
triggered.
Critical
An alarm is
triggered, and
the smart
cooling product
is shut down.
Critical
An alarm is
triggered.
Critical
An alarm is
triggered.
Critical
An alarm is
triggered.
Critical
An alarm is
triggered.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible
Solution
Cause
the indoor
controlling
fan are
the indoor
faulty.
fan.
1. The cables
1. Check
to the chilled
cables to the
water valve
chilled water
are loose or
valve.
damaged.
2. Maintain or
2. The chilled
replace the
water valve
chilled water
is faulty.
valve.
1. The cables
1. Check the
to the chilled
control cable
water valve
connection
are loose or
to the chilled
damaged.
water valve.
2. The chilled
2. Maintain or
water valve
replace the
is faulty.
chilled water
valve.
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.
The air damper
Maintain or
is faulty.
replace the air
damper.
The air damper
Maintain or
is faulty.
replace the 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
1. Check the
feedback
feedback
cable to the
cable
air damper is
connection
loose or
to the air
222
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