Vertiv Liebert LVC - Page 37

Vertiv | Liebert LVC | User Manual 32
Maintenance and Troubleshooting
Table 5-1 Table of Alarm Troubleshooting
Alarm
number
ID
Alarm
name
Cause Troubleshooting
A00
Phase loss alarm
One phase or two phases of three-
phase voltage are lost
Check that the three-phase voltage
is correct
The fan speed controller board has
a hardware fault
Replace the fan speed controller
board and compare the result of two
boards
A01
PIM over
temperature
The fan cannot run normally Check that the fan runs normally
The fan speed controller board has
a hardware fault
Replace the fan speed controller
board and compare the result of two
boards
A02
Fan failure
The fan cannot run normally Check that the fan runs normally
The AC contactor supplying power
for fan has fault or its wire cuts o
Check the wiring of AC contactor;
detect the auxiliary contact state of
AC contactor
The fan speed controller board has
a hardware fault
Replace the fan speed controller
board and compare the result of two
boards
A03
Spray water system
alarm
Water pipe leakage
Deal with leakage point and
compare the result of two boards
The fan speed controller board has
a hardware fault
Replace the fan speed controller
board and compare the result of two
boards
A04
Fan failure
locked
The fan cannot run normally Check that the fan runs normally
The AC contactor supplying power
for fan has fault or its wire cuts o
Check the wiring of AC contactor;
detect the auxiliary contact state of
AC contactor
The fan speed controller board has
a hardware fault
Replace the fan speed controller
board and compare the result of two
boards