Huawei NetCol5000-A - Page 151

NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual
5 Operation and Maintenance
Issue 01 (2017-07-27)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
143
Alarm
ID
Alarm
Alarm
Severity
Impact
Possible Cause
Solution
dirty/blocked & heat ex
effect poor.
5. The drive module is
faulty.
module.
a072
Comp
drive U
phase loss
Major
The alarm
is
generated.
1. The cables to phase U of
the comp driver are loose
or damaged.
2. The comp driver is faulty.
1. Check the cables to the
comp driver.
2. Maintain or replace the
comp driver.
a073
Comp
drive V
phase loss
Major
The alarm
is
generated.
1. The cables to phase V of
the comp driver are loose
or damaged.
2. The comp driver is faulty.
1. Check the cables to the
comp driver.
2. Maintain or replace the
comp driver.
a074
Comp
drive W
phase loss
Major
The alarm
is
generated.
1. The cables to phase W of
the comp driver are loose
or damaged.
2. The comp driver is faulty.
1. Check the cables to the
comp driver.
2. Maintain or replace the
comp driver.
a075
Comp
phase
current
alarm
Major
The alarm
is
generated,
and the
compresso
r shuts
down.
1. The comp is in lack of
oil.
2. The condenser is blocked.
3. Outdoor fans run
abnormally.
4. The refrigerant is
overfilled.
5. The comp is faulty.
1. Fill oil to the comp.
2. Clean the condenser fins.
3. Maintain or replace
outdoor fans.
4. Decrease certain amount
of refrigerant.
5. Maintain or replace the
comp.
a077
Indoor fan
1, 2, 3, 4,
5, 6, 7, 8,
9, or 10
fault
Major
The alarm
is
generated.
Can not
start the
compresso
r,
humidifier
, and
electric
heater.
1. The power supply to the
indoor fan is abnormal.
2. The cables to the indoor
fan are loose or damaged.
3. The indoor fan is faulty.
1. Check the power supply
to the indoor fan.
2. Check the cables to the
indoor fan.
3. Maintain or replace the
indoor fan.
a078
Full water
Critical
The alarm
is
generated,
and the
system
shuts
down.
1. The cables to the high
float are loose or
damaged.
2. The high float is faulty or
stuck.
3. The condensate pump is
faulty, or the drainage
capacity decreases.
4. The pipeline or the
internal drainpipe is
blocked or frozen.
1. Check the cables to the
high float.
2. Maintain or replace the
high float or clear the
obstacles.
3. Reference to the solutions
for the a041 cond pump
fault alarm.
4. Clear the internal
drainpipe.
a079
Drain
Major
The alarm
1. The cables to the high
1. Check the cables to the