Huawei NetCol8000-A045D User Manual page 240

NetCol8000-A(045, 055, 060, 090, 120) In-room Air
Cooled Smart Cooling Product
User Manual
Alarm ID Alarm Name
A051-01 Hot aisle high
temperature alarm
A055-01 Compressor 1
discharge temperature
sensor fault
Compressor 2
discharge temperature
sensor fault
A056-01 Compressor 1
discharge pressure
sensor fault
Compressor 2
discharge pressure
sensor fault
Issue 05 (2020-10-10)
Alarm
Severity
Critical
Major
Major
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
● The temperature
sensors or
temperature and
humidity sensors
are located in
inappropriate
positions.
● The thermal load
power is high or
the cooling
capacity is
insufficient.
● The ambient
temperature
exceeds the upper
threshold.
● The high
temperature alarm
threshold is
inappropriate.
● The value detected
by the temperature
sensor or
temperature and
humidity sensor is
different from the
actual value.
● The cables to the
discharge
temperature sensor
are loose or
damaged.
● The discharge
temperature sensor
is faulty.
● The cables to the
pressure sensor are
loose or damaged.
● The pressure sensor
is faulty.
10 Alarm Reference
Solution
1. Adjust the positions
of the temperature
sensors or
temperature and
humidity sensors.
2. Add air
conditioners or
contact Huawei
technical support
3. Measure the
ambient
temperature. Check
whether other
causes exist if the
alarm persists in a
long time after
startup.
4. Adjust the high
temperature alarm
threshold.
5. Calibrate or replace
the temperature
sensor or
temperature and
humidity sensor.
1. Check cables to the
discharge
temperature sensor.
2. Maintain or replace
the discharge
temperature sensor.
1. Check the cables to
the pressure sensor.
2. Replace the
pressure sensor
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