Huawei NetCol5000-A021 User Manual page 171

NetCol5000-A021 In-row Air Cooled Smart Cooling
Product
User Manual (208 V)
Alarm Alarm Name
ID
a075 Comp phase
current alarm
a077 Indoor fan
1/2/3/4/5/6 fault
a078 Full water
Issue 03 (2020-01-10)
Alarm Impact
Severity
Major The alarm is
generated.
Major The alarm is
generated.
Critical The alarm is
generated, and
the system
shuts down.
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6 System Operation and Maintenance
Possible Causes Solution
1. The comp is in 1. Fill oil to the comp.
lack of oil.
2. Clean the condenser fins.
2. The condenser
3. Maintain or replace the
fins are
blocked.
4. Decrease certain amount of
3. The outdoor
units do not run
5. Maintain or replace the
properly.
4. The refrigerant
is overfilled.
5. The comp is
faulty.
1. The power 1. Check the power supply to
supply to the
indoor fan is
2. Check the cables to the
abnormal.
2. The cables to
3. Maintain or replace the
the indoor fan
are loose or
damaged.
3. The indoor fan
is faulty.
1. The cables to 1. Check the cables to the
the high liquid
level detector
2. Maintain or replace the
are loose or
damaged.
3. Maintain or replace the
2. The high liquid
level detector is
4. Clear the obstacles in the
faulty or stuck.
3. If a condensate
pump is
5. Clear the internal
configured, the
pump may be
faulty or its
draining
capacity
decreases.
4. If condensate
pump is
configured, its
drainpipe may
be blocked.
5. If no
condensate
pump is
configured,
maybe the auto
drain port is
blocked or the
outdoor units.
refrigerant.
comp.
the indoor fan.
indoor fan.
indoor fan.
high liquid level detector.
high liquid level detector.
cond pump.
drainpipe of the cond
pump.
drainpipe.
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