Huawei FusionModule5000 Maintenance Manual page 89

FusionModule5000 Smart Modular Data Center
Maintenance Guide (ECC800)
Alar
m ID
a003
a018
a025
a026
Issue 01 (2019-03-05)
Alarm Severit System
Name y Operatio
n
Return- Warnin The alarm
air LT g is
generated.
Indoor Warnin The alarm
fan g is
1/2/3/4/ generated.
5/6
exceed
runtime
Air Warnin The alarm
filter g is
blocked generated.
Air Warnin The alarm
filter is
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Copyright © Huawei Technologies Co., Ltd.
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 load is low.
2. The ambient temp
is low.
3. The return-air LT
alarm threshold is
inappropriate.
4. The temp
displayed is
different from the
actual temp.
5. The CW valve is
faulty if cooling
source is CW.
The accumulated
runtime of the fan
exceeds the alarm
threshold.
1. Air filters are
blocked.
2. The differential
press switch is
faulty.
3. The differential
press switch is set
inappropriately.
4. The press tube is
blocked or
cracked, or is
located in an
inappropriate
position.
5. The cables to the
differential press
switch are loose or
damaged.
The accumulated
runtime of air filter
3 Alarm Reference
Recovery Measures
replace the faulty
CW valve.
1. Please consult
Huawei technical
support.
2. Check the ambient
temp.
3. Adjust the
return-air LT
alarm threshold.
4. Calibrate or
replace the
abnormal temp
sensors.
5. Maintain or
replace the faulty
CW valve.
Maintain or replace
the indoor fan and
clear the accumulated
runtime.
1. Maintain or
replace the air
filters.
2. Replace the
differential press
switch.
3. Adjust the
threshold of the
differential press
switch.
4. Maintain or
replace the press
tube.
5. Check the cables
to the differential
press switch.
Maintain or replace
the air filter and clear
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