Huawei NetCol8000-A Series User Manual page 167

NetCol8000-A(050, 100) In-room Air Cooled Smart
Cooling Product
User Manual
Alar
m ID
a004
a007
Issue 12 (2020-10-28)
Alarm Alar Occurren
Name m ce
Sever Condition
ity s
Return Major The
-air humidity
humid exceeds
invalid the
normal
rangeduri
ng normal
communic
ation, or
the
ambient
temperatu
re and
humidity
collection
board fails
to
communic
ate when
the alarm
detection
delay
expires.
T/H Critic The main
board al control
comm board fails
failed to
communic
ate with
the
temperatu
re and
humidity
collection
board
when the
alarm
detection
delay
expires.
Copyright © Huawei Technologies Co., Ltd.
7 System Operation and Maintenance
Possible Causes
1. Dirt or water exists
around the T/H
sensor, which leads
to a detection
fault.
2. The T/H sensor is
faulty.
1. The cables to the
T/H sensor are
loose or damaged.
2. The DIP switch of
the T/H sensor is
set incorrectly.
3. The T/H sensor is
faulty.
4. The
communication
port of the control
board is faulty.
Solutions
1. Remove dirt
or water from
the T/H
sensor.
2. Maintain or
replace the
T/H sensor.
1. Check the
cables to the
T/H sensor.
2. Set the DIP
switch of the
T/H sensor
correctly.
3. Maintain or
replace the
T/H sensor.
4. Maintain or
replace the
control board.
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