Vertiv Liebert LVC - Page 39

Vertiv | Liebert LVC | User Manual 34
Maintenance and Troubleshooting
Alarm
number
ID
Alarm
name
Cause Troubleshooting
A0C
Spray low pressure
alarm
The pump fault
Replace the pump and compare the
result of two boards
The pipe is blocked
Clean the pipe system and compare
the result of two boards
The water ow switch fault
Replace the water ow switch 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
A0d
NTC failure
NTC board installation failure Check the installation
NTC board failure
Replace the NTC board 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
A0E
Fan not conguring
alarms
The control board is not congured Check the conguration
The fan speed controller board has
a hardware fault
Replace the fan speed controller
board and compare the result of two
boards
A0F
Bus under voltage
The power supply voltage is
abnormal
Check the power supply
The fan speed controller board has
a hardware fault
Replace the fan speed controller
board and compare the result of two
boards