Huawei NetCol5000-A035 User Manual page 213

NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm Width)
No.
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Issue 17 (2020-10-22)
Symptom
In the commissioning
or running period,
humidification is
enabled, but the
humidifier neither
humidifies nor
generates alarms.
The water inlet pipe or
drainpipe leaks.
Water is continuously
charged into the
humidifier cylinder.
The humidifier circuit
breaker trips
automatically.
The water level
decreases gradually,
but the humidifier
cylinder does not work
and no manual
drainage is ongoing.
The humidifier
cylinder overflows.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible Cause
The mains fail, or the
manual drainage
switch is not turned to
"O: Normal
humidifying".
The water inlet pipe or
drainpipe is not
secured or is broken.
The water inlet
solenoid valve fails
and cannot be closed.
The actual current
exceeds the upper
threshold, which
causes the current
transformer to fail.
The detected current
is incorrect.
The drainage valve
leaks.
Poor water quality
brings severe water
scale at the bottom of
the cylinder. The
drainpipe or drain
outlet is blocked, and
the high water level
sensor is faulty.
Measures
In the commissioning
or running period,
switch on the
humidifier circuit
breaker and flip the
manual drainage
switch to "O: Normal
humidifying".
Repair leaking parts.
Manually start the
humidifier several
times. If the problem
persists, replace the
water inlet solenoid
valve.
Start the humidifier
and check the
humidifier current.
The appropriate
current is less than 4
A. If the current
exceeds 6 A, the
current breaker will
shutdown
automatically. If the
current is reasonable,
check the current
transformer and its
cable.
Manually start the
drainage valve several
times. If the problem
persists, replace the
drainage valve.
Clean the drain outlet
and check the high
water level sensor
cable is properly
connected.
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