Vertiv Liebert SRC-G Series User Manual

Vertiv™ | Liebert® SRC-G | User Manual 75
Troubleshooting
Symptom Possible Cause User Needs to Check Particulars or Processing Method
No display, control
buttons do not
respond, and unit
operates normally
Disconnection between keypad and
control board
Check if the connections between keypad and control
board are firmly connected
The screen display
is normal, the
button does not
respond, the device
is running normally
The display board setting is faulty
Contact Vertiv representative for maintenance support or
engineering assistance
No display, control
buttons do not
respond and unit
has no output
Low power supply voltage Check for power supply voltage
Communication between control
board and control board interrupted
Check if the connections between control board and
control board are firmly connected
High pressure
alarm
Insuicient airflow across condenser
Remove debris from coil and airflow inlet, and
check the fan speed function of the control board
Condenser fan is not operating
Check that the connections of the control board to the
outdoor unit terminals are firmly connected, and
check that the condensate pressure sensor works
normally
High pressure switch failure
Check the connection of the high-pressure switch and the
on-o condition when the power is turned O. If necessary,
replace it with the high-pressure switch of the same
specification
Low pressure alarm
Refrigerant leakage
Check for leaking point and fix it immediately and then
re-charge the system with adequate amount of refrigerant
Outdoor ambient temperature is too
low
Contact Vertiv representative for maintenance support or
engineering assistance
Outdoor unit fan running at full
speed upon low outdoor ambient
temperature
Check if the outdoor unit cabling is correct; and check
whether the condensate pressure sensor works normally

Vertiv Liebert SRC-G Series Specifications

General

Brand	Vertiv
Model	Liebert SRC-G Series
Category	Air Conditioner
Language	English