Huawei NetCol5000-C - Page 114

NetCol5000-C Chilled Water-Cooled In-Row Precision
Air Conditioner
User Manual
6 System Operation and Maintenance
Issue 02 (2013-12-10)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
106
Alarm
ID
Alarm Name
Severity
System
Operation
Possible Causes
Recovery Measures
a043
Floor water
overflow
Critical
The alarm is
generated, and
the
NetCol5000-C
shuts down.
1. Water exists on the
floor.
2. The overflow
detection board is
faulty.
1. Check and clear the
water.
2. Maintain or replace
the overflow
detection board.
a044
Smoke
detected
Critical
The alarm is
generated, and
the
NetCol5000-C
shuts down.
1. Smoke is generated in
the equipment room.
2. Cables to the smoke
sensor are loose or
damaged.
3. The smoke sensor is
faulty.
1. Exhaust smoke in
the equipment room
and reset the smoke
sensor.
2. Check cables to the
smoke sensor.
3. Replace the smoke
sensor.
a045
Teamwork
mode failed
Major
The alarm is
generated, and
a message
"Networking
failed" is
displayed.
1. The teamwork
circuits are faulty.
2. The master and slave
NetCol5000-C units
have the same
address.
3. The master
NetCol5000-C is not
configured.
1. Check the teamwork
circuits.
2. Change the
NetCol5000-C
addresses.
3. Configure the master
NetCol5000-C.
a047
No Refrig
Output
Critical
The alarm is
generated, and
the
NetCol5000-C
shuts down.
1. Cables to the chilled
water valve are loose
or damaged.
2. The chilled water
valve is stuck or
faulty.
1. Check cables to the
chilled water valve.
2. Maintain or replace
the chilled water
valve.
a048
Supply-air HT
Critical
The alarm is
generated. The
indoor fan has
the maximum
output, and the
value has 100%
outputs in
automatic
running mode.
1. The supply-air high
temperature alarm set
point is inappropriate
for the working
conditions.
2. The temperature
displayed on the LCD
is different from the
actual temperature.
3. Cables to the
supply-air
temperature sensor
are loose or damaged.
4. The chilled water
flow is insufficient,
or the supply water
temperature is high.
5. The chilled water
valve is faulty.
6. The cooling capacity
1. Adjust the supply-air
high temperature
alarm set point.
2. Maintain or replace
the supply air
temperature sensor.
3. Check cables to the
supply-air
temperature sensor.
4. Check the pressure
and temperature of
the supplied chilled
water.
5. Maintain or replace
the chilled water
valve.
6. Add more
NetCol5000-C units.
7. Check the ambient
temperature.