Huawei NetCol5000-C Series User Manual page 143

NetCol5000-C(065, 080) In-row Chilled Water Smart
Cooling Product
User Manual
Alarm
ID
A053-01
A054-01
Issue 07 (2020-03-16)
Alarm Alarm
Name Severit
y
PSU 1 Major
fault alarm
PSU 2 Major
fault alarm
PSU 1 Major
communic
ation
interrupt
alarm
PSU 2 Major
communic
ation
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Impact Possible Cause
temperature
exceeds the
upper threshold.
4. The high
temperature
alarm threshold
is inappropriate.
5. The value
detected by the
temperature
sensor or
temperature and
humidity sensor
is different from
the actual value.
6. The chilled water
flow is
insufficient, or
the supply water
temperature is
high.
7. The chilled water
valve is stuck or
faulty.
An The PSU is faulty.
alarm is
triggere
d.
An The PSU is faulty.
alarm is
triggere
d.
1. The
An
communications
alarm is
cables of the
triggere
PSU are loose or
d.
damaged.
2. The PSU is
faulty.
3. The
communications
port of the main
control board is
faulty.
1. The
An
communications
alarm is
cables of the
triggere
Solution
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.
6. Check the
pressure and
temperature of
chilled water.
7. Maintain or
replace the
chilled water
valve.
Maintain or replace
the PSU.
Maintain or replace
the PSU.
1. Check the
communications
cables of the
PSU.
2. Maintain or
replace the PSU.
3. Maintain or
replace the main
control board.
1. Check the
communications
cables of the
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