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.
73
For other alarms generated for the 35 kW air-cooled precision air conditioner, see the air conditioner
user manual.
5.17 20 kW Air-Cooled Precision Air Conditioner Alarms
Fault
Category
Alar
m
Sever
ity
Symptom
Possible
Cause
Troubleshooting
20 kW
air-cooled
precision
air
conditione
r alarms
Major
The compressor does
not work.
The device
generates a fault
alarm.
Check whether an alarm
is generated. If yes,
handle the alarm by
referring to the alarm
reference list.
The compressor
does not need to
start.
Check whether cooling is
required on the controller
home page.
The power
supply for the
compressor is
faulty.
Check that the
compressor input power
is normal. Remove the
X115 compressor
terminals, measure the
terminal voltages at the
connection surfaces. If
voltages between
terminals 1 and 2, 2 and
3, and 1 and 3 are within
±10% of the rated
voltage, the input power
supply is normal.
Check the compressor
power supply status. If
the power supply is
faulty, check whether the
power supply cable is
abnormal, and whether
the compressor power
supply circuit breaker is
off or abnormal. If a fault
is identified, rectify the
fault and check whether
the abnormality
disappears.
The compressor
is damaged.
Replace the compressor
by following instructions
in the
Replacing the
Compressor
section in
the air conditioner user