Alarm ID Alarm Name Alarm
Severity
Possible Cause Solution
A007-01 Return air 1 temp/
humid sensor comm
failed
Cold aisle 1 temp/
humid sensor comm
failed
Cold aisle 2 temp/
humid sensor comm
failed
Cold aisle 3 temp/
humid sensor comm
failed
Cold aisle 4 temp/
humid sensor comm
failed
Cold aisle 5 temp/
humid sensor comm
failed
Hot aisle 1 temp/
humid sensor comm
failed
Hot aisle 2 temp/
humid sensor comm
failed
Hot aisle 3 temp/
humid sensor comm
failed
Hot aisle 4 temp/
humid sensor comm
failed
Hot aisle 5 temp/
humid sensor comm
failed
Major
● The cables to the
temperature and
humidity sensor are
loose or damaged.
● The DIP switch of
the temperature
and humidity
sensor is set
incorrectly.
● The temperature
and humidity
sensor is faulty.
● The
communications
port of the main
control board is
faulty.
1. Check the cables to
the temperature
and humidity
sensor.
2. Set the DIP switch
of the temperature
and humidity
sensor correctly.
3. Maintain or replace
the temperature
and humidity
sensor.
4. Maintain or replace
the main control
board.
A023-01 Electric heater 1 fault
Electric heater 2 fault
Major ● The cables to the
temperature switch
are loose or
damaged.
● The temperature
switch is faulty.
● The electric heater
is faulty.
1. Check cables to the
temperature switch.
2. Maintain or replace
the temperature
switch.
3. Replace the electric
heater.
NetCol8000-A(045, 055, 060, 090, 120) In-room Air
Cooled Smart Cooling Product
User Manual 10 Alarm Reference
Issue 05 (2020-10-10) Copyright © Huawei Technologies Co., Ltd. 224
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