Huawei NetCol5000-C User Manual page 113

NetCol5000-C Chilled Water-Cooled In-Row Precision
Air Conditioner
User Manual
Alarm
Alarm Name
ID
a018 Indoor fan
1/2/3/4/5/6/7/
8 exceed
runtime
Air filter
a025
blocked
a026 Air filter
exceed
runtime
a027 Power loss
a041 Cond pump
1/2 fault
a042 Remote
shutdown
Issue 02 (2013-12-10)
System
Severity
Operation
Warning The alarm is
generated.
The alarm is
Warning
generated.
Warning The alarm is
generated.
Warning The alarm is
generated.
Major The alarm is
generated.
Critical The alarm is
generated, and
the
NetCol5000-C
shuts down.
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Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible Causes
actual temperature.
3. The chilled water
valve is faulty.
4. The ambient
temperature is low.
The accumulated runtime
of indoor fan exceeds the
alarm set point.
1. The air filters are
blocked.
2. Cables to the
differential pressure
switch are loose or
damaged.
3. The differential
pressure switch is
faulty.
4. The differential
pressure tube is
blocked.
The accumulated runtime
of the air filters exceeds
the alarm set point.
The NetCol5000-C is
disconnected.
1. Condensate pump is
faulty.
2. The fuse or relay of
condensate pump is
faulty.
3. The drainage capacity
of condensate pump 1
decreases, or the
drainpipe is blocked.
4. Cables to condensate
pump 1 are loose or
damaged.
1. The remote shutdown
switch is triggered.
2. The remote shutdown
switch is faulty, or
cables to the remote
shutdown switch are
loose or damaged.
Recovery Measures
the chilled water
valve.
4. Check the ambient
temperature.
Maintain or replace
indoor fan.
1. Clean or replace air
filters.
2. Check cables to the
differential pressure
switch.
3. Replace the
differential pressure
switch.
4. Check the
differential pressure
tube.
Maintain or replace the
air filters.
No recovery measure is
required.
1. Replace condensate
pump.
2. Replace the fuse or
relay of condensate
pump.
3. Check cables to
condensate pump.
4. Remove dirt from
the drainpipe.
1. Check the status of
the remote shutdown
switch.
2. Reconnect the
remote shutdown
switch and cables to
the remote shutdown
switch.
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