Component
Alarm Name
Alarm
Severit
y
Possible Cause
Measures
Power underfreq
Major
1. The power supply
frequency is too low.
2. The SPD three-phase
test board is faulty.
1. Check the power
supply frequency.
2. Replace the SPD
three-phase test
board.
Secondary power
24V undervoltage
Major
The auxiliary power
supply is faulty.
Replace the auxiliary
power supply module.
Secondary power
24V overvoltage
Major
The auxiliary power
supply is faulty.
Replace the auxiliary
power supply module.
Supply-air HT
Critical
1. The load is high, or
the refrigeration
capacity is
insufficient.
2. The supply air temp
is higher than the
supply-air HT alarm
threshold during
startup.
3. The ambient temp is
high.
4. The supply-air HT
alarm threshold is
inappropriate.
5. The temp displayed
is different from the
actual temp.
1. Add more smart
cooling product
units.
2. Check other causes if
the alarm persists
after startup.
3. Check the ambient
temp.
4. Adjust the supply-air
HT alarm threshold.
5. Calibrate or replace
the abnormal
sensors.
Supply-air LT
Warnin
g
1. The load is low.
2. The ambient temp is
low.
3. The supply-air LT
alarm threshold is
inappropriate.
4. The temp displayed
is different from the
actual temp.
5. The air filters are
blocked.
1. Please consult
Huawei technical
support.
2. Check the ambient
temp.
3. Adjust the supply-air
LT alarm threshold.
4. Calibrate or replace
the abnormal
sensors.
5. Maintain or replace
the air filters.
FusionModule800 Smart Small Data Center
User Manual
6 O&M
Issue 01 (2021-02-05)
Copyright © Huawei Technologies Co., Ltd.
380