Huawei NetCol8000-C User Manual page 196

NetCol8000-C(070-260) In-room Chilled Water Smart
Cooling Product
User Manual
Alar Alarm
m ID Name
a220 Wizard
startup is in
progress
a225 Fresh air
damper
close fault
a226 Fresh air
damper
feedback
abnorm
a227 Fresh air
damper
feedback
fault
a228 Return air
damper
feedback
abnorm
a229 Return air
damper
feedback
fault
a230 Direct
free-cooling
plenum
open fault
a231 Direct
free-cooling
plenum
close fault
a232 Fresh air
filter
blocked
Issue 06 (2020-01-13)
Alarm Impact
Severi
ty
Warnin N/A
g
Major N/A
Major N/A
Major N/A
Major N/A
Major N/A
Major N/A
Major N/A
Warnin N/A
g
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
Wizard startup in progress.
The fresh air damper is faulty.
1. The control cable to the
fresh air damper is not
properly connected.
2. The fresh air damper is
faulty.
1. The control cable to the
fresh air damper is not
properly connected.
2. The fresh air damper is
faulty.
1. The control cable to the
return air damper is not
properly connected.
2. The return air damper is
faulty.
1. The control cable to the
return air damper is not
properly connected.
2. The return air damper is
faulty.
1. The cables to the fresh and
return air dampers are not
properly connected.
2. The fresh and return air
dampers are faulty.
1. The cables to the fresh and
return air dampers are not
properly connected.
2. The fresh and return air
dampers are faulty.
1. The fresh air filter is dirty
or blocked.
2. The differential pressure
switch of the fresh air unit
6 System Operation and Maintenance
Solution
Wait until wizard startup
is complete or clear the
Wizard startup in
progress alarm manually
to exit wizard startup.
Maintain or replace the
fresh air damper.
1. Check the feedback
cable connection to
the fresh air damper.
2. Maintain or replace
the fresh air damper.
1. Check the feedback
cable connection to
the fresh air damper.
2. Maintain or replace
the fresh air damper.
1. Check the control
cable connection to
the return air damper.
2. Maintain or replace
the return air damper.
1. Check the control
cable connection to
the return air damper.
2. Maintain or replace
the return air damper.
1. Check the cable
connections to the
fresh and return air
dampers.
2. Maintain or replace
the fresh and return air
dampers.
1. Check the cable
connections to the
fresh and return air
dampers.
2. Maintain or replace
the fresh and return air
dampers.
1. Maintain or replace
the fresh air filter.
2. Replace the
differential pressure
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