Huawei NetCol8000-E220 User Manual page 181

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