Huawei NetCol5000-C User Manual page 120

NetCol5000-C Chilled Water-Cooled In-Row Precision
Air Conditioner
User Manual
Alarm
Alarm Name
ID
a101 CW value
abnormal
feedback
a103 Indoor fan
power alarm
a104 In-cabinet
overflow
a105 Indoor fan
failure
a106 Cab overflow
sensor fault
a108 Cold aisle
1/2/3 temp
invalid
Cold aisle
a109
1/2/3 humid
invalid
Issue 02 (2013-12-10)
System
Severity
Operation
Major The alarm is
generated.
Major The alarm is
generated, and
the indoor fan
output is less
than 85%.
Critical The alarm is
generated, and
the
NetCol5000-C
shuts down.
Critical The alarm is
generated.
Major The alarm is
generated, and
the
NetCol5000-C
shuts down.
Major The alarm is
generated.
The alarm is
Major
generated.
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6 System Operation and Maintenance
Possible Causes
damaged.
1. Cables to the chilled
water valve are loose
or damaged.
2. The chilled water
valve is faulty.
1. The indoor fan power
module is faulty.
2. Cables to the indoor
fan power module are
loose or damaged.
1. Water exists in the
overflow pan.
2. The cabinet overflow
sensor is
disconnected.
The number of faulty
indoor fans is greater
than or equals to six.
The cabinet overflow
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.
Recovery Measures
1. Adjust the cables to
the chilled water
valve.
2. Maintain or replace
the chilled water
valve.
1. Maintain or replace
the indoor fan power
module.
2. Check cables to the
dry contact of the
indoor fan power
module.
1. Check and clear the
water.
2. Maintain or replace
the cabinet overflow
sensor.
Maintain or replace the
faulty indoor fans.
Maintain or replace the
cabinet overflow 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.
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