FusionModule1000B Air-Cooled IT Solution
Maintenance Guide
5 Alarms and Faults
Issue 02 (2017-01-10)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
69
5.16 35 kW Air-Cooled Precision Air Conditioner Alarms
Fault
Category
Alar
m
Sever
ity
Symptom
Possible
Cause
Troubleshooting
35 kW
air-cooled
precision
air
conditione
r alarms
Major
There is an abnormal
noise during
operation.
The compressor,
fan, or pipes are
loose.
Check and secure loose
parts.
Major
The compressor does
not work.
The high
pressure switch
is triggered.
Check the high pressure
switch.
The circuit
breaker, fuse, or
cable is
disconnected.
Check the main circuit
breaker, compressor
circuit breaker, fuses,
and cables.
The compressor
motor is
damaged.
Check whether the motor
is damaged and needs
replacing.
The compressor
does not need to
start.
Check for the
requirement status on the
LCD.
Major
The compressor
exhaust temperature
is too high.
The refrigerant
loop or
component is
blocked.
Clean up foreign matter
from the refrigerant loop.
The outdoor
unit is not
properly
installed.
Properly install the
outdoor unit. Do not
expose it to direct
sunshine, and verify that
the distances meet
requirements in the
installation manual.
Air enters the
refrigerant loop.
Exhaust air and repair
the pipeline.
Heat dissipation
is poor because
the condenser is
dirty or blocked.
Clean the condenser fins.
The outdoor fan
fails.
Check whether the
outdoor fan is working
properly.
The refrigerant
is insufficient.
Fill more refrigerant.
Major
The indoor fan fails
The main circuit Check the status of