Huawei NetCol5000-C User Manual page 121

NetCol5000-C Chilled Water-Cooled In-Row Precision
Air Conditioner
User Manual
Alarm
Alarm Name
ID
a110 Cold aisle
1/2/3 T/H brd
comm fail
a111 Hot aisle 1/2/3
temp invalid
Hot aisle 1/2/3
a112
humid invalid
a113 Hot aisle 1/2/3
T/H brd
comm fail
Issue 02 (2013-12-10)
System
Severity
Operation
Major The alarm is
generated.
Major The alarm is
generated.
The alarm is
Major
generated.
Major The alarm is
generated.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible Causes
1. The DIP switch is
incorrectly set for the
ambient T/H sensor.
2. The communications
cables to the ambient
T/H sensor are loose
or damaged.
3. The ambient T/H
sensor is faulty.
1. The ambient T/H
sensor fails to
communicate with
the NetCol5000-A.
2. Dirt or water exists
around the board,
which leads to a
detection fault.
3. The ambient T/H
sensor is faulty.
1. The ambient T/H
sensor fails to
communicate with
the NetCol5000-A.
2. Dirt or water exists
around the board,
which leads to a
detection fault.
3. The ambient T/H
sensor is faulty.
1. The DIP switch is
incorrectly set for the
ambient T/H sensor.
2. The communications
cables to the ambient
T/H sensor are loose
or damaged.
3. The ambient T/H
sensor is faulty.
Recovery Measures
1. Correctly set the
DIP switch for the
ambient T/H sensor,
as shown in 3.13.5
Installing the
Humidity and
Temperature Sensor.
2. Make sure the
communication
cables to the T/H
sensor is connected
properly.
3. Maintain or replace
the ambient T/H
sensor.
1. Clear the return-air 2
T/H brd comm fail
alarm.
2. Remove dirt or
water from the
board.
3. Maintain or replace
the ambient T/H
sensor.
1. Clear the return-air 2
T/H brd comm fail
alarm.
2. Remove dirt or
water from the
board.
3. Maintain or replace
the ambient T/H
sensor.
1. Correctly set the
DIP switch for the
ambient T/H sensor,
as shown in 3.13.5
Installing the
Humidity and
Temperature Sensor.
2. Make sure the
communication
cables to the T/H
sensor is connected
properly.
3. Maintain or replace
the ambient T/H
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