Huawei FusionModule800 Maintenance Manual page 30

FusionModule800 Smart Small Data Center
Maintenance Guide
Cat
ego
ry
Out
doo
r
unit
Issue 02 (2016-11-15)
Sympt Possible Cause
om
Abnorm The compressor, fan, or
al noise pipes are loose.
is
generate
d during
operatio
n.
The The high and low
compres pressure switches are
triggered.
sor does
not
The circuit breaker, fuse,
work.
or cable is disconnected.
The compressor motor is
damaged.
The compressor does not
need to start.
The compressor does not
work.
The The refrigerant loop or
compres component is blocked.
sor
The outdoor units are not
discharg
installed in right
e
positions. (The
tempera
installation distances
ture is
should meet
too
requirements.)
high.
Air enters the refrigerant
loop.
Heat dissipation is poor
because the condenser is
dirty or blocked.
The outdoor fan fails.
The refrigerant is
insufficient.
The The refrigerant is
compres insufficient.
sor
The outdoor fan speed
discharg
controller fails.
e
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Measure
Check and secure loose parts.
Check the high and low pressure switches.
Check the main circuit breaker, fuses, and
cables.
Check whether the motor is damaged.
Replace the motor if it is faulty.
Check for the requirement status on the LCD.
Check whether the compressor driver is
faulty. Replace the compressor if it is faulty.
Clean the loop and components.
Install outdoor units in the right positions
based on the installation requirements.
Check the discharge temperature and
pressure. Eliminate and retrieve refrigerant.
Refill refrigerant.
Clean the condenser fins using a fin brush.
Check whether the outdoor fan works
properly.
Fill more refrigerant.
Fill more refrigerant.
Replace the fan speed controller.
4 Troubleshooting
24