Alarm ID
Alarm Name
Alarm
Severity
Possible Cause
Solution
A272-02
Teamwork networking
abnormal alarm
Major
● Teamwork settings
are incorrect for
slave units.
● The number of air
conditioner units is
incorrectly set on
the master unit.
● A slave unit is
offline.
1. Modify teamwork
settings for slave
units to enable
slave units to join
the teamwork
group.
2. Set the number of
units in this group
to the actual
number on the
master unit.
3. Check the
teamwork cable
connection and
running status of
the slave units.
A273-01
Teamwork function
abnormal alarm
Major
● All sensors for
controlling the
indoor fan are
disabled.
● All cables to the
sensors for
controlling the
indoor fan are
loose or damaged.
● All sensors for
controlling the
indoor fan are
faulty.
1. Enable the sensors
for controlling the
indoor fan.
2. Check the cable
connections to the
sensors for
controlling the
indoor fan.
3. Maintain or replace
the sensors for
controlling the
indoor fan.
A279-01
A279-04
Supply air damper
fault
Return air damper
fault
Exhaust air damper
fault
Critical
● The control cable
to the air damper is
loose or damaged.
● The air damper is
faulty.
1. Check the control
cable connection to
the air damper.
2. Maintain or replace
the air damper.
A279-02
Supply air damper
fault
Return air damper
fault
Exhaust air damper
fault
Warning
The air damper is
faulty.
Maintain or replace
the air damper.
FusionCol8000-E240 Modular Indirect Evaporative
Cooling System
User Manual
8 System Maintenance
Issue 02 (2021-04-15)
Copyright © Huawei Technologies Co., Ltd.
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