Huawei NetCol5000-A - Page 145

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.
137
Alarm
ID
Alarm
Alarm
Severity
Impact
Possible Cause
Solution
a033
Power
phase C
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.
a034
Power
overfreq
Major
The alarm
is
generated,
and the
system
shuts
down.
1. The power supply
frequency is too high.
2. The SPD three-phase test
board is faulty.
1. Check the power supply
frequency. Ensure that
the frequency is within
the operating range.
2. Replace the SPD
three-phase test board.
a035
Power
underfreq
Major
The alarm
is
generated,
and the
system
shuts
down.
1. The power supply
frequency is too low.
2. The SPD three-phase test
board is faulty.
1. Check the power supply
frequency. Ensure that
the frequency is within
the operating range.
2. Replace the SPD
three-phase test board.
a038
Liquid
pipe temp
sensor
fault
Major
The alarm
is
generated.
1. Cables to the liquid pipe
temp sensor are not
properly connected.
2. The liquid pipe temp
sensor is faulty.
1. Check cables to the liquid
pipe temp sensor.
2. Maintain or replace the
liquid pipe temp sensor.
a039
Ctrl point
sensor
disabled
Major
The alarm
is
generated.
All the T/H sensors of the
control point are disabled.
Enable the T/H sensors of
the control point or change
the control point.
a040
PSU 1
power
input
failure
PSU 2
power
input
failure
Warning
The alarm
is
generated.
The power input cables of
the PSU are loose or
damaged.
Check the power input
cables of the PSU.
a042
Remote
shutdown
Critical
The alarm
is
generated,
and the
system
shuts
down.
1. The remote shutdown dry
contact is triggered.
2. The cables to the remote
shutdown dry contact is
faulty.
1. Check the status of the
remote shutdown dry
contact.
2. Check the cables to the
remote shutdown dry
contact.
a043
Floor
water
Critical
The alarm
is
generated,
1. Water exists on the floor.
2. The overflow sensor
cable is not properly
1. Check and clean the
water.
2. Check the cable