Huawei NetCol5000-A - Page 144

NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual
5 Operation and Maintenance
Issue 01 (2017-07-27)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
136
Alarm
ID
Alarm
Alarm
Severity
Impact
Possible Cause
Solution
switch is blocked or
disconnected.
5. The cables to the
differential press switch
are loose or damaged.
5. Check the cables to the
differential press switch.
a026
Air filter
exceed
runtime
Warning
The alarm
is
generated.
The accumulated runtime of
the air filters exceeds the
alarm set point.
Maintain or replace the air
filters. Tap Maint >
Performance Maint to clear
the accumulated runtime.
a027
Power loss
Warning
The alarm
is
generated.
The supply power is cut off.
Check the power supply
cables.
a028
Power
phase A
overvolt
Major
The alarm
is
generated,
and the
system
shuts
down.
1. The power supply voltage
is too high.
2. The SPD three-phase test
board is faulty.
1. Check the power supply
voltage, Ensure that the
voltage is within the
operating range.
2. Replace the SPD
three-phase test board.
a029
Power
phase B
overvolt
Major
The alarm
is
generated,
and the
system
shuts
down.
1. The power supply voltage
is too high.
2. The SPD three-phase test
board is faulty.
1. Check the power supply
voltage, Ensure that the
voltage is within the
operating range.
2. Replace the SPD
three-phase test board.
a030
Power
phase C
overvolt
Major
The alarm
is
generated,
and the
system
shuts
down.
1. The power supply voltage
is too high.
2. The SPD three-phase test
board is faulty.
1. Check the power supply
voltage, Ensure that the
voltage is within the
operating range.
2. Replace the SPD
three-phase test board.
a031
Power
phase A
undervolt
Major
The alarm
is
generated,
and the
system
shuts
down.
1. The power supply voltage
is too low.
2. The SPD three-phase test
board cable is not
properly connected.
3. The SPD three-phase test
board is faulty.
1. Check the power supply
voltage.
2. Check the cable
connection to the SPD
three-phase test board.
3. Replace the SPD
three-phase test board.
a032
Power
phase B
undervolt
Major
The alarm
is
generated,
and the
system
shuts
down.
1. The power supply voltage
is too low.
2. The SPD three-phase test
board cable is not
properly connected.
3. The SPD three-phase test
board is faulty.
1. Check the power supply
voltage.
2. Check the cable
connection to the SPD
three-phase test board.
3. Replace the SPD
three-phase test board.