Huawei NetCol8000-A Maintenance And Troubleshooting Manual page 7

Indoor Unit - Filter Monthly Maint
enance
Inspection
No.
Method
Visual
1 Verify that the air flters are clean and not blocked.
inspection
Visual
2 Check whether the air flter is damaged or deformed.
inspection
Check whether the diferential pressure sensor of the air
flter works properly.
1. Switch on the external power supply circuit breaker.
After the unit operates normally, choose Settings >
Alarm settings > Main Board to Enable the alarm
function of the diferential pressure switch.
Operation
3
2. Block 100% of the air return vent with plastic
inspection
material or bafe plate. If the air flter blocking alarm is
generated, the diferential pressure sensor is working
properly. If the air flter
blocking alarm is not generated, check whether the
diferential
pressure tube is correctly connected 。
Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved.
Operations Troubleshooting
If an air flter is dirty
and
blocked, clean it using
a
vacuum cleaner,
shake dust of it, or
replace it
Replace the air flters
Check whether the
pressure tube of the
air flter clogging
switch is fxed
properly. (The
pressure tube is fxed
under the air flter,
and it is on the right
side of the unit.) If the
fault is not rectifed,
contact Huawei
technical support to
replace the air flter
clogging switch.
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