Huawei NetCol5000-A021 User Manual page 179

NetCol5000-A021 In-row Air Cooled Smart Cooling
Product
User Manual (208 V)
Alarm Alarm Name
ID
a128 Cylinder
undercurrent
a129 Cylinder
overcurrent
locked
a130 Water inlet
solenoid fault
Issue 03 (2020-01-10)
Alarm Impact
Severity
Major The alarm is
generated.
Major The humidifier
is shut down.
Major The humidifier
is shut down.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible Causes Solution
blocked.
6. The drainpipe is
blocked. 6. Verify that the drainpipe
1. The inlet water 1. Verify that the inlet water
conductivity
exceeds the
lower threshold.
2. Thoroughly clean the
2. There is foam
in the
3. Clean or replace the
humidifier
cylinder.
4. Verify that the current
3. The humidifier
cylinder has
thick scale.
4. The current
transformer
circuit is faulty.
1. The electrodes 1. Verify that electrodes are
in the
humidifier
cylinder or the
power cables
are
short-circuited.
2. Verify that cables to the
2. The water inlet
solenoid valve
leaks.
3. The inlet water
conductivity 3. Verify that the inlet water
exceeds the
upper threshold.
4. The current 4. Verify that the current
transformer
circuit is faulty.
5. The drainage 5. Verify that cables to the
solenoid valve
is faulty or
blocked.
6. The drainpipe is
blocked. 6. Verify that the drainpipe
NOTE
The water inlet Replace the water inlet
solenoid valve is solenoid valve.
faulty.
NOTE
or replace the valve if
necessary.
can drain water smoothly.
conductivity is within the
threshold.
humidifier cylinder.
humidifier cylinder.
transformer circuit is
normal.
normal, not burnt or
short-circuited, and the
power cable is not
short-circuited. Wash or
replace cylinder.
water inlet solenoid valve
are properly connected.
Wash or replace the valve
if necessary.
conductivity is within the
threshold.
transformer circuit is
normal.
drainage solenoid valve are
properly connected. Wash
or replace the valve if
necessary.
can drain water smoothly.
After the alarm is rectified, click
Manual clear on the alarm page.
After the alarm is rectified, click
171