FusionModule1000A40 IT Solution
Maintenance Guide (2016.05, AI Version)
4 Alarms and Faults
Issue 04 (2018-01-05)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
61
Fault
Category
Alarm
Severity
Symptom
Possible
Cause
Troubleshooti
ng
20 kW
air-cooled
precision air
conditioner
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.