Huawei NetCol5000-A025 - Page 210

Al
ar
m
ID
Alarm
Name
Ala
rm
Sev
erit
y
Impact Possible Causes Solution
a1
4
7
Outdoo
r fan
drive
output
phase
sequen
ce
abnorm
al
MA
JOR
Generates
an alarm
and shuts
down the
compressor.
1. The output cable
connector for
the outdoor fan
drive or the
input cable
connector for
the outdoor fan
is loose.
2. The output cable
to the outdoor
fan drive is
disconnected.
3. The outdoor fan
drive is faulty.
4. The outdoor fan
is faulty.
1. Secure the output
cable to the
outdoor fan drive.
2. Replace the output
cable to the
outdoor fan drive.
3. Replace the
outdoor fan drive.
4. Replace the
outdoor fan.
a1
6
2
Outdoo
r fan
pressur
e
sensor
fault
MA
JOR
Generates
an alarm.
1. A cable of the
pressure sensor
is loose.
2. The pressure
sensor is faulty.
1. Secure the pressure
sensor wiring
terminals.
2. Replace the
pressure sensor.
a1
7
2
SPD
and
voltage
detecti
on
board
comm
failed
MA
JOR
Generates
an alarm.
1. The
communications
cable is not
connected
properly.
2. The SPD and
voltage
detection board
is faulty.
3. The
communications
port of the main
control board is
faulty.
1. Check the
communications
cable.
2. Replace the SPD
and voltage
detection board.
3. Maintain or replace
the main control
board.
a1
7
4
SPD
functio
n
failure
MA
JOR
Generates
an alarm.
The SPD and
voltage detection
board is faulty.
Replace the SPD and
voltage detection
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. 200