Huawei NetCol8000-C User Manual page 194

NetCol8000-C(070-260) In-room Chilled Water Smart
Cooling Product
User Manual
Alar Alarm
m ID Name
a199 Motorized
damper
feedback
fault
a206 CW valve 1
opening
over
a207 Indoor fan
unify
interrupt
a208 Indoor fan
1/2/3/4
blocked
a209 Indoor fan
1/2/3/4
overheated
a210 Indoor fan
1/2/3/4 drive
faulty
a211 Indoor fan
1/2/3/4 low
speed
a212 Standby
power phase
Issue 06 (2020-01-13)
Alarm Impact
Severi
ty
Critical N/A
Warnin An alarm is
g triggered.
Major An alarm is
triggered.
Critical N/A
Critical N/A
Critical N/A
Critical N/A
Major N/A
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
1. The control cable to the
motorized damper is not
properly connected.
2. The motorized damper is
faulty.
1. The thermal load power is
high or the cooling capacity
is insufficient.
2. The ambient temperature
exceeds the upper
threshold.
3. The alarm threshold for the
excessive chilled water
valve openness is
inappropriate.
4. The chilled water flow is
insufficient, or the supply
water temperature is high.
5. The chilled water valve is
stuck or faulty.
1. All sensors for controlling
the indoor fan are disabled.
2. All cablesto the sensors
forcontrolling the indoor
fan are loose or damaged.
3. All sensors for controlling
the indoor fan are faulty.
1. The indoor fan blade is
stuck.
2. The indoor fan is faulty.
The indoor fan is faulty.
The indoor fan is faulty.
The indoor fan is faulty.
1. The power grid is unstable.
2. The SPD (if
6 System Operation and Maintenance
Solution
1. Check the feedback
cable connection to
the motorized damper.
2. Maintain or replace
the motorized damper.
1. Add smart cooling
products.
2. Measure the ambient
temperature.
3. Adjust the alarm
threshold for the
excessive chilled
water valve openness.
4. Check the pressure
and temperature of
chilled water.
5. Maintain or replace
the chilled water
valve.
1. Enable the sensors for
controlling the indoor
fan.
2. Check the cable
connections to the
sensors for controlling
the indoor fan.
3. Maintain or replace
the sensors for
controlling the indoor
fan.
1. Clear the blockage.
2. Maintain or replace
the indoor fan.
Maintain or replace the
indoor fan.
Maintain or replace the
indoor fan.
Maintain or replace the
indoor fan.
1. Check the backup
power grid.
2. Maintain or replace
186