![background image](http://html.mh-extra.com/html/huawei/netcol8000-e220/netcol8000-e220_user-manual_22074181.webp)
Alar
m ID
Alarm
Severit
y
Alarm Name
Probable Cause
Solution
A279
-01
CRITICA
L
Exhaust air
damper fault
1. The control cable
to the air damper is
loose or damaged.
2. The air damper is
faulty.
1. Check the control
cable connection to the
air damper.
2. Maintain or replace
the air damper.
A279
-02
CRITICA
L
Motorized
damper off
fault alarm
The air damper is
faulty.
1. Maintain or replace
the air damper.
A279
-02
CRITICA
L
Exhaust air
damper fault
The air damper is
faulty.
1. Maintain or replace
the air damper.
A279
-04
CRITICA
L
Motorized
damper
feedback fault
alarm
1. The feedback
cable to the air
damper is loose or
damaged.
2. The air damper is
faulty.
1. Check the feedback
cable connection to the
air damper.
2. Maintain or replace
the air damper.
A279
-04
CRITICA
L
Exhaust air
damper fault
1. The feedback
cable to the air
damper is loose or
damaged.
2. The air damper is
faulty.
1. Check the feedback
cable connection to the
air damper.
2. Maintain or replace
the air damper.
A279
-08
CRITICA
L
Exhaust air
damper fault
1. The control cable
to the air damper is
loose or damaged.
2. The air damper is
faulty.
1. Check the control
cable connection to the
air damper.
2. Maintain or replace
the air damper.
A27C
-01
MAJOR
Return air 2
temp/humid
sensor fault
1. The cables to the
temperature and
humidity sensor are
loose or damaged.
2. The temperature
and humidity sensor
is faulty.
1. Check the cables to
the temperature and
humidity sensor.
2. Maintain or replace
the temperature and
humidity sensor.
A27C
-01
MAJOR
Cold aisle 1
temp/humid
sensor fault
1. The cables to the
temperature and
humidity sensor are
loose or damaged.
2. The temperature
and humidity sensor
is faulty.
1. Check the cables to
the temperature and
humidity sensor.
2. Maintain or replace
the temperature and
humidity sensor.
NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
6 System Operation and Maintenance
Issue 06 (2020-08-19)
Copyright © Huawei Technologies Co., Ltd.
172