Vertiv Liebert DME22 - Page 118

Vertiv | Liebert® DM | User Manual 109
Troubleshooting
Alarm ID Alarm Name Possible Cause
User Needs to Check Particulars or
Processing Method
A05
EEPROM read
failure
Fan speed controller board hardware
failure
Compare after replacing the fan speed
controller board.
A06
SCR
temperature
sensor failure
The SCR temperature sensor is not
installed or the terminal is not properly
connected
Check the cabling of the SCR temperature
sensor (J8 (SCRTemp), J8 (SCRTemp)
terminal position is shown in Figure 6-1).
SCR temperature sensor failure
Compare after replacing the SCR temperature
sensor.
Fan speed controller board hardware
failure
Compare after replacing the fan speed
controller board.
A07
Frequency
abnormal
Grid voltage frequency error,
Fan speed controller board hardware
failure
Compare after replacing the fan speed
controller board.