Huawei NetCol5000-A050 - Page 218

Alarm
ID
Alarm Name Alar
m
Seve
rity
Possible Cause Solution
A143-0
2
Outdoor unit
communicatio
n failed
MAJ
OR
1. The
communications
cable to the
temperature
control intelligent
monitoring board
is not properly
connected.
2. The
temperature
control intelligent
monitoring board
is faulty.
3. The power
supply to the
temperature
control intelligent
monitoring board
is abnormal.
4. The main
control module is
faulty.
5. The external fan
speed is too high.
6. The outdoor fan
is faulty.
1. Check the
communications cable
connection to the
temperature control
intelligent monitoring
board.
2. Replace the
temperature control
intelligent monitoring
board.
3. Check the power
cable connection to the
temperature control
intelligent monitoring
board.
4. Replace the main
control module.
5. If the fan is working
properly, add a
bae
plate on the air return
side of the outdoor
unit.
6. Replace the outdoor
fan.
A146-0
1
Outdoor fan
blocked alarm
MAJ
OR
1. The outdoor fan
is blocked.
2. The outdoor fan
is faulty.
1. Clear obstacles from
the outdoor fan to
ensure that it works
properly.
2. Replace the outdoor
fan.
NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual 9 Alarm Reference
Issue 08 (2021-09-17) Copyright © Huawei Technologies Co., Ltd. 208