Huawei NetCol5000-A User Manual page 151

NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual
Alarm
Alarm
ID
Comp
a072
drive U
phase loss
a073 Comp
drive V
phase loss
a074 Comp
drive W
phase loss
a075 Comp
phase
current
alarm
a077 Indoor fan
1, 2, 3, 4,
5, 6, 7, 8,
9, or 10
fault
a078 Full water
a079 Drain
Issue 01 (2017-07-27)
Alarm
Impact
Severity
The alarm
Major
is
generated.
Major The alarm
is
generated.
Major The alarm
is
generated.
Major The alarm
is
generated,
and the
compresso
r shuts
down.
Major The alarm
is
generated.
Can not
start the
compresso
r,
humidifier
, and
electric
heater.
Critical The alarm
is
generated,
and the
system
shuts
down.
Major The alarm
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Possible Cause
dirty/blocked & heat ex
effect poor.
5. The drive module is
faulty.
1. The cables to phase U of
the comp driver are loose
or damaged.
2. The comp driver is faulty.
1. The cables to phase V of
the comp driver are loose
or damaged.
2. The comp driver is faulty.
1. The cables to phase W of
the comp driver are loose
or damaged.
2. The comp driver is faulty.
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. 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. 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. The cables to the high
5 Operation and Maintenance
Solution
module.
1. Check the cables to the
comp driver.
2. Maintain or replace the
comp driver.
1. Check the cables to the
comp driver.
2. Maintain or replace the
comp driver.
1. Check the cables to the
comp driver.
2. Maintain or replace the
comp driver.
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.
1. Check the power supply
to the indoor fan.
2. Check the cables to the
indoor fan.
3. Maintain or replace the
indoor fan.
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.
1. Check the cables to the
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