Troubleshooting; The Netcol5000-A020 Generates Abnormal Voice - Huawei NetCol5000-A020 User Manual

NetCol5000-A020 Air Cooled In-row Precision Air
Conditioner
User Manual
Alarm Alarm
ID Name
a113 Hot aisle
1/2/3 T/H brd
comm fail

5.5 Troubleshooting

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5.5.1 The NetCol5000-A020 Generates Abnormal Voice

Symptom
The NetCol5000-A020 generates abnormal voice.
Possible Causes
Compressors, fans, or pipes are loose.
Procedure
Step 1 Check whether the compressor fastening bolts are loose.
Issue 01 (2014-06-30)
Alarm
Impact
Severity
Major The alarm
is
generated.
Certain circuits in the NetCol5000-A020 have lethal voltage. Only professional
technicians are allowed to perform maintenance.
Exercise caution during live-line troubleshooting.
If jumpers are used for troubleshooting, remove them after troubleshooting. Connected
jumpers may affect control functions and damage equipment.
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Copyright © Huawei Technologies Co., Ltd.
5 System Operation and Maintenance
Possible Causes
2. Dirt or water exists
around the board, which
leads to a detection fault.
3. The temperature and
humidity collection
board is faulty.
1. DIP switches of the
temperature and
humidity collection
board are incorrectly set.
2. Cables to the
temperature and
humidity collection
board are loose or
damaged.
3. The temperature and
humidity collection
board is faulty.
Solution
3. Maintain or replace
the temperature and
humidity collection
board in the hot aisle.
1. Set DIP switches by
referring to 3.8.6
Installing T/H
Sensors.
2. Check cables to the
temperature and
humidity collection
board.
3. Maintain or replace
the temperature and
humidity collection
board in the hot aisle.
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