Huawei NetCol8000-A Series User Manual page 174

NetCol8000-A(050, 100) In-room Air Cooled Smart
Cooling Product
User Manual
Alar
m ID
a015
a017
a018
Issue 12 (2020-10-28)
Alarm Alar Occurren
Name m ce
Sever Condition
ity s
Comp Warni The
exceed ng cumulativ
runtim e running
e period of
a
compresso
r is
greater
than or
equal to
the alarm
threshold.
Indoor Critic The
fan air al airflow
loss loss
differentia
l pressure
switch is
triggered,
and the
alarm
detection
delay
expires.
Indoor Warni The
fan ng cumulativ
exceed e running
runtim period of
e indoor
fans is
greater
than or
equal to
the alarm
threshold.
Copyright © Huawei Technologies Co., Ltd.
7 System Operation and Maintenance
Possible Causes
The accumulated
runtime of the
compressor exceeds
the alarm threshold.
1. An inappropriate
threshold is set for
the differential
pressure switch.
2. The differential
pressure tube to
the differential
pressure switch is
blocked or cracked,
or is secured in an
inappropriate
position.
3. Cables to the
differential
pressure switch are
loose or damaged.
4. Indoor fans are
faulty.
The accumulated
runtime of the fan
exceeds the alarm
threshold.
Solutions
Maintain or
replace the
compressor and
clear the
accumulated
runtime.
1. Adjust the
threshold for
the
differential
pressure
switch.
2. Maintain or
replace the
differential
pressure tube.
3. Check cables
to the
differential
pressure
switch.
4. Maintain or
replace the
fans.
Maintain or
replace the
indoor fan and
clear the
accumulated
runtime.
165