Huawei NetCol8000-A Series User Manual page 159

NetCol8000-A(050, 100) In-room Air Cooled Smart
Cooling Product
User Manual
Alarm Alarm
ID Name
a015 Comp
exceed
runtime
a017 Indoor fan
air loss
a018 Indoor fan
exceed
runtime
a019 Humidifie
r pan
water
level high
a020 Humidifie
r pan no
water
Issue 10 (2019-01-15)
Alarm Occurrence
Severit Conditions
y
Warning The
cumulative
running period
of a
compressor is
greater than or
equal to the
alarm
threshold.
Critical The airflow
loss
differential
pressure
switch is
triggered, and
the alarm
detection
delay expires.
Warning The
cumulative
running period
of indoor fans
is greater than
or equal to the
alarm
threshold.
Critical The high water
level detection
switch for the
infrared
humidifier
water pan is
disconnected
when the
alarm
detection
delay expires.
Major The dry
heating
protection
temperature
switch for the
infrared
humidifier
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible Causes
The accumulated runtime of
the compressor exceeds the
alarm threshold.
1. An inappropriate threshold
is set for the differential
pressure switch.
2. The differential pressure
tube to the differential
pressure switch is blocked
or cracked, or is secured in
an inappropriate position.
3. Cables to the differential
pressure switch are loose
or damaged.
4. Indoor fans are faulty.
The accumulated runtime of
the fan exceeds the alarm
threshold.
1. The pan's drainpipe is
blocked or located higher
than the water level in the
pan.
2. The overflow outlet on the
humidifier is dirty or
blocked.
3. Cables to the high water
level detection switch are
loose or damaged.
4. The high water level
detection switch is faulty.
1. The humidifier water pan
has insufficient water.
2. The manual reset
temperature switch has not
been reset.
3. Cables to the humidifier
Solutions
Maintain or replace the
compressor and clear
the accumulated
runtime.
1. Adjust the threshold
for the differential
pressure switch.
2. Maintain or replace
the differential
pressure tube.
3. Check cables to the
differential pressure
switch.
4. Maintain or replace
the fans.
Maintain or replace the
indoor fan and clear the
accumulated runtime.
1. Maintain or replace
the drainpipe.
2. Maintain or replace
the humidifier.
3. Check cables to the
high water level
detection switch.
4. Maintain or replace
the high water level
detection switch.
1. Solve the water
insufficiency
problem.
2. Reset the manual
reset temperature
switch.
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