Huawei FusionModule5000 Maintenance Manual page 93

FusionModule5000 Smart Modular Data Center
Maintenance Guide (ECC800)
Alar
m ID
a051
a052
a077
Issue 01 (2019-03-05)
Alarm Severit System
Name y Operatio
n
Hot-aisl Critical The alarm
e HT is
generated.
The
indoor fan
has the
maximum
output,
and the
electroma
gnetic
valve and
actuator
has 100%
outputs in
automatic
running
mode.
Supply- Major The alarm
air temp is
invalid generated.
Indoor Major The alarm
fan is
1/2/3/4/ generated.
5/6 fault
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Possible Causes
insufficient, or the
supply water temp
is high if cooling
source is CW.
7. The CW valve is
faulty if cooling
source is CW.
1. The hot-aisle T/H
sensors are located
in inappropriate
position.
2. The ambient temp
is high.
3. The hot-aisle HT
alarm threshold is
inappropriate.
4. The temp
displayed is
different from the
actual temp.
5. The load is high or
the refrigeration
capacity is
insufficient.
6. CW flow is
insufficient, or the
supply water temp
is high if cooling
source is CW.
7. The CW valve is
faulty if cooling
source is CW.
1. The cables to the
temperature sensor
are loose or
damaged.
2. The temperature
sensor is faulty.
1. The power supply
to the indoor fan is
abnormal.
2. The cables to the
indoor fan are
loose or damaged.
3. The indoor fan is
faulty.
3 Alarm Reference
Recovery Measures
7. Maintain or
replace the faulty
CW valve.
1. Adjust the
position of the
hot-aisle T/H
sensors.
2. Check the ambient
temp.
3. Adjust the
hot-aisle HT
alarm threshold.
4. Calibrate or
replace the
abnormal T/H
sensors.
5. Add more air
conditioner units.
6. Check the press
and the temp of
CW.
7. Maintain or
replace the faulty
CW valve.
1. Check the cables
to the temperature
sensor.
2. Maintain or
replace the
temperature
sensor.
1. Check the power
supply to the
indoor fan.
2. Check the cables
to the indoor fan.
3. Maintain or
replace the indoor
fan.
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