Huawei NetCol5000-A - Page 159

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.
151
Alarm
ID
Alarm
Alarm
Severity
Impact
Possible Cause
Solution
a167
Auxiliary
power
24V
overvoltag
e
Major
The alarm
is
generated.
The auxiliary power supply
is faulty.
Replace the auxiliary power
supply module.
a168
Auxiliary
power
24V
undervolta
ge
Major
The alarm
is
generated.
The auxiliary power supply
is faulty.
Replace the auxiliary power
supply module.
a169
Power
phase A
open
Critical
The alarm
is
generated,
and the
system
shuts
down.
1. The power grid is
unstable.
2. The phase A cable is
faulty.
1. Check the power grid.
2. Check the phase A cable
is faulty.
a170
Power
phase B
open
Critical
The alarm
is
generated,
and the
system
shuts
down.
1. The power grid is
unstable.
2. The phase B cable is
faulty.
1. Check the power grid.
2. Check the phase B cable
is faulty.
a171
Power
phase C
open
Critical
The alarm
is
generated,
and the
system
shuts
down.
1. The power grid is
unstable.
2. The phase C cable is
faulty.
1. Check the power grid.
2. Check the phase C cable
is faulty.
a172
SPD
3-phase
test board
comm
fault
Major
The alarm
is
generated.
1. The communications
cable is not properly
connected.
2. The SPD three-phase test
board is faulty.
3. The communication port
of the control board is
faulty.
1. Check the
communications cable.
2. Replace the SPD
three-phase test board.
3. Maintain or replace the
control board.
a174
SPD failed
Major
The alarm
is
generated.
The SPD three-phase test
board is faulty.
Replace the SPD three-phase
test board.
a175
L1/L2
linkage
humidity
not met
Major
The alarm
is
generated.
1. The cabinet T/H sensor is
faulty.
2. The cables to the cabinet
T/H sensor are loose or
damaged.
1. Maintain or replace the
cabinet T/H sensor.
2. Maintain or replace the
cables to the temperature
sensor, rack environment