Vertiv Liebert SRC-G Series - Page 86

Vertiv™ | Liebert® SRC-G | User Manual 76
Troubleshooting
Symptom Possible Cause User Needs to Check Particulars or Processing Method
High temperature
alarm
High temperature setpoint is
unreasonable
Reset the setpoint
Room load exceeding unit design
ability
Check for room sealing or make capacity expansion
Low temperature
alarm
Low temperature setpoint is
unreasonable
Reset the setpoint
High humidity
alarm
High humidity setpoint is
unreasonable
Reset the setpoint
Vapor barrier is not done in the
room
Check for the vapor barrier
Low humidity alarm Setpoint is unreasonable Reset the setpoint
SPD alarm
SPD failure Replace the SPD switch
Low supply power voltage Check for power supply volatge at SPD (if available)
Remote shutdown Remote control shutdown Adjust remote control parameters
Airflow loss alarm Return air volume is small
Remove the obstruction at the return air outlet of the unit,
clean the return air filter, or contact Vertiv representative
for maintenance support or engineering assistance
Return air
temperature sensor
fault alarm
Return air temperature and humidity
sensor failure
Replace the return air temperature and humidity sensor
Return air humidity
sensor fault alarm
Airflow loss sensor
failure alarm