Huawei NetCol5000-A025 - Page 208

Al
ar
m
ID
Alarm
Name
Ala
rm
Sev
erit
y
Impact Possible Causes Solution
a1
4
3
Outdoo
r unit
commu
nicatio
n
failure
MA
JOR
Generates
an alarm.
1. The
communications
cable between
the indoor and
outdoor units is
not properly
connected.
2. The outdoor fan
drive is faulty.
3. The outdoor unit
is not powered
on.
4. The
communications
port of the main
control board is
faulty.
1. Check the
communications
cable between the
indoor and outdoor
units.
2. Maintain or replace
the outdoor fan
drive.
3. Power on the
outdoor unit.
4. Maintain or replace
the main control
board.
NetCol5000-A025 In-row Air Cooled Smart Cooling
Product
User Manual (300 mm Width) 6 System Operation and Maintenance
Issue 15 (2020-12-10) Copyright © Huawei Technologies Co., Ltd. 198