FusionModule1000A20 CT Solution
Maintenance Guide
3 Routine Maintenance
Issue 01 (2019-02-25)
Copyright © Huawei Technologies Co., Ltd.
20
Maintenance Item Operation
Check Standard
Troubleshooting
The air filters are
not damaged or
misshapen.
Replace the air filter
by following
instructions in
5.2.1.1 Replacing an
Air Filter.
The differential
pressure switch of
the air filter works
properly.
Completely cover
the air return side
using plastic foam or
baffle plate, and
check whether an
alarm is generated.
If yes, the
differential pressure
switch operates
properly. If no,
check whether the
pressure tube is
properly connected.
Verify that the
pressure tube of the
air filter clogging
switch is fixed
properly. If the fault
persists, replace the
differential pressure
switch.
Indoor fan
The fan enclosure is
not misshapen.
Repair the
enclosure.
Foreign matter does
not exist in the fans.
Clear foreign matter.
The fan blades are
intact.
For details, contact
Huawei technical
support.
The indoor fan
generates no
abnormal sound
during operation,
such as metal
friction sound and
harsh noises.
Clear foreign matter.
Check that screws
securing the fan are
tightened.
Screws securing the
fan are not loose or
misshapen.
Tighten or replace
screws.
The cable terminals
are securely
connected.
Tighten the
connectors.
Compressor
The anchor screws
of the compressor
are tight.
Tighten loose
screws.
