Huawei NetCol8000-A Series User Manual page 164

NetCol8000-A(050, 100) In-room Air Cooled Smart
Cooling Product
User Manual
Alarm Alarm
ID Name
reverse
a042 Remote
shutdown
a043 Floor
water
overflow
a044 Smoke
detected
a045 Teamwor
k mode
failed
a046 Comp
freeze
point
Issue 10 (2019-01-15)
Alarm Occurrence
Severit Conditions
y
filtering board
detects an
incorrect angle
among three
phases when
the alarm
detection
delay expires.
Critical The remote
power-off
switch polarity
is different
from the preset
polarity.
Critical The overflow
switch is
connected
when the
alarm
detection
delay expires.
Critical The switch
polarity of the
smoke sensor
is different
from the preset
polarity.
Major The local unit
cannot obtain
teamwork
parameters
from the
master unit
even though
teamwork
control is
configured for
the local unit,
or the master
and a slave
unit have the
same address.
Critical The antifreeze
low pressure
protection
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible Causes
is faulty.
1. The remote shutdown dry
contact is triggered.
2. The cables to the remote
shutdown dry contact is
faulty.
1. Water exists on the floor.
2. The water sensor is faulty.
1. Smoke is generated in the
equipment room.
2. The cables to the smoke
sensor are loose or
damaged.
3. The smoke sensor is
faulty.
1. The DIP switch is set
incorrectly for teamwork.
2. The teamwork cables are
loose or damaged.
3. Any two smart cooling
product units have the
same address.
4. No smart cooling product
unit is configured as the
master unit.
5. The master unit is powered
off.
1. The refrigerant leaks.
2. The solenoid valve is
faulty.
Solutions
2. Maintain or replace
the surge protection
board.
1. Check the status of
the remote shutdown
dry contact.
2. Check the cables to
the remote shutdown
dry contact.
1. Check and clear the
water.
2. Maintain or replace
the water sensor.
1. Exhaust smoke in the
equipment room and
reset the smoke
sensor.
2. Check cables to the
smoke sensor.
3. Maintain or replace
the smoke sensor.
1. Set the DIP switch
correctly for
teamwork.
2. Check the teamwork
cables.
3. Change the addresses
of the smart cooling
product units.
4. Configure one smart
cooling product unit
as the master unit.
5. Power on the master
unit, or configure
another unit as the
master unit.
1. Check for any
leakages. Fill
refrigerant after
155