Table of Contents
Advertisement
NetCol5000-A021 In-row Air Cooled Smart Cooling
Product
User Manual (208 V)
Alarm
Alarm Name
ID
a144
Outdoor fan run
overtime
a145
Outdoor fan Dr
hardware
protect
a146
Outdoor fan
blocked
a147
Outdoor fan Dr
OP open phase
a148
R/W fail of
outdoor fan Dr
a149
Outdoor fan Dr
12 V undervolt
a150
Outdoor fan
grid overvolt
a151
Grid undervolt
or phase open
Issue 03 (2020-01-10)
Alarm
Impact
Severity
Warning
The alarm is
generated.
Major
The
compressor is
shut down.
Major
The
compressor is
shut down.
Major
The
compressor is
shut down.
Critical
The
compressor is
shut down.
Major
The
compressor is
shut down.
Major
The
compressor is
shut down.
Major
The
compressor is
shut down.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible Causes
Solution
driver is faulty.
3. The outdoor
unit is not
powered on.
4. The
communication
port of the
control board is
faulty.
The outdoor fan
Replace the outdoor fan, and
running time
clear the accumulated running
exceeds the upper
time.
limit.
1. The driver
1. Replace the driver output
output cable is
short-circuited
2. Replace the fan.
or grounded.
3. Power off and verify that
2. The fan is
faulty.
3.
The power
grid voltage
exceeds the
upper threshold.
The fan is blocked.
Clean the fan and remove
obstacles to ensure that the fan
works properly.
1. A driver output
1. Secure the driver output
cable connector
or fan input
2. Replace the driver output
cable connector
is loose.
2. A cable is not
properly
connected.
EEPROM
Power off the driver and
read/write fails.
power it on 10s later. Replace
it if the alarm persists.
The auxiliary
Replace the fan driver.
power supply is
faulty.
The power grid
Power off the driver and
voltage exceeds the
verify that the supply voltage
upper threshold.
meets specifications
The power grid has
Secure the power grid input
an open phase, or
cable, power off the driver,
its voltage is below
and verify that the supply
control board.
cable.
the input power supply
voltage meets the
specifications.
cable.
cable.
174
Advertisement
Table of Contents
