Huawei NetCol5000-A User Manual page 160

NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual
Alarm
Alarm
ID
a177 Humidity
invalid
L1/L2
interrupt
a179 Humidifie
r pump
fault
Issue 01 (2017-07-27)
Alarm
Impact
Severity
Major The alarm
is
generated.
Major The alarm
is
generated,
and the
humidifier
shuts
down.
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Possible Cause
3. The aisle T/H sensor of
an air conditioner is
faulty.
4. The cables to the aisle
T/H sensor of an air
conditioner are loose or
damaged.
5. The DIP switch of the
T/H sensor is set
incorrectly.
6. The communications port
of the control board is
faulty.
7. The ETH converter is
faulty.
8. The smart socket is
faulty.
1. All cabinet T/H sensor is
faulty.
2. All cables to the cabinet
T/H sensor are loose or
damaged.
3. All aisle T/H sensor of an
air conditioner is faulty.
4. All cables to the aisle
T/H sensor of an air
conditioner are loose or
damaged.
5. All DIP switch of the T/H
sensor is set incorrectly.
6. All communications port
of the control board is
faulty.
7. The ETH converter is
faulty.
8. The smart socket is
faulty.
1. The water pump inlet is
blocked.
2. Cables to the humidifier
pump are loose or
damaged.
3. The humidifier pump is
faulty.
4. The humidifier pump
5 Operation and Maintenance
Solution
unit, and monitoring host
(ECC).
3. Maintain or replace the
T/H sensor of the air
conditioner.
4. Maintain or replace the
cables between the T/H
sensor and the control
board.
5. Set the DIP switch
correctly for the T/H
sensor.
6. Maintain or replace the
control board.
7. Maintain or replace the
ETH converter.
8. Maintain or replace the
smart socket.
1. Maintain or replace the
cabinet T/H sensor.
2. Maintain or replace the
cables to the temperature
sensor, rack environment
unit, and monitoring host
(ECC).
3. Maintain or replace the
T/H sensor of the air
conditioner.
4. Maintain or replace the
cables between the T/H
sensor and the control
board.
5. Set the DIP switch
correctly for the T/H
sensor.
6. Maintain or replace the
control board.
7. Maintain or replace the
ETH converter.
8. Maintain or replace the
smart socket.
1. Clear the blockage from
the water pump inlet.
2. Verify that the humidifier
pump cable is properly
connected.
3. Replace the pump if it is
faulty.
4. Check whether the
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