Vertiv Liebert LVC - Page 38

Vertiv | Liebert LVC | User Manual 33
Maintenance and Troubleshooting
Alarm
number
ID
Alarm
name
Cause Troubleshooting
A06
Pressure sensor
failure
The pressure sensor is not installed
or its terminal connection is poor
Check the wiring of pressure sensor
Jumper caps are not used to short
terminals J17 and J18 of current
pressure sensor
Install the jumper cap when
the current pressure sensor is
congured
Pressure sensor failed
Replace the pressure sensor 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
A07
EEPROM
read fault
The fan speed controller board has
a hardware fault
Replace the fan speed controller
board and compare the result of two
boards
A08
Hardware over
current
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
A09
Bus over 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
A0A
Communication
failure
Communications wiring fault Check the Communications wiring
The fan speed controller board has
a hardware fault
Replace the fan speed controller
board and compare the result of two
boards
A0b
Spray high pressure
alarm
The nozzle clogging
Clean or replace the nozzle and
compare the result of two boards
The solenoid valve fault
Replace the solenoid valve and
compare the result of two boards
The high pressure switch fault
Replace the high pressure switch
and compare the result of two
boards
The pump fault
Replace the pump 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