Huawei NetCol8000-C070 User Manual page 163

NetCol8000-C(070, 130, 190) In-room Chilled Water
Smart Cooling Product
User Manual
Alarm ID Alarm Name
A172-01 SPD and voltage
detection board comm
failed
A174-01 SPD function failure
A174-02 SPD function failure
A179-01 Humidifier function
abnormal alarm
Issue 07 (2021-12-30)
Alarm
Severity
Major
Major
Major
Major
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
● The
communications
cable is not
connected properly.
● The SPD and
voltage detection
board is faulty.
● The
communications
port of the main
control board is
faulty.
The SPD and voltage
detection board is
faulty.
● The SPD is faulty.
● The cable to the
SPD is not
connected properly.
● The humidifier
pump inlet is
blocked.
● The float does not
drop because the
humidifier float is
faulty.
● The cable to the
humidifier pump is
not connected
properly.
● The humidifier
pump is faulty.
● The water pump is
blocked.
6 Maintenance
Solution
1. Check the
communications
cable.
2. Replace the SPD
and voltage
detection board.
3. Maintain or replace
the main control
board.
Replace the SPD and
voltage detection
board.
1. Replace the SPD.
2. Check the cable
connection to the
SPD.
1. Clear the blockage
from the humidifier
pump inlet.
2. Maintain the
humidifier float.
3. Check the cable
connection to the
humidifier pump.
4. Replace the
humidifier pump.
5. Replace the water
pump.
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