IPSi365 Series Manual
76
Operational Indicators
There are eight LED indicators on the inverter’s top chassis which display the unit’s operating 
condition. The table below details their meaning:
LEDs Meaning
LOW 
VOLTAGE 
•  Blinks red when the input voltage nears the minimum limit for operation. 
•  Glows red when the input voltage is too low for operation. The Bypass LED will 
also glow red and the Invert LED will turn off.
•  The shutdown and start-up thresholds for the low voltage alarm can be 
adjusted using InverterWizard. See InverterWizard for more information. 
HIGH 
VOLTAGE
•  Blinks red when the input voltage nears the maximum threshold for operation. 
•  Glows red when the input voltage is too high for operation. The Bypass LED 
will also glow red and the Invert LED will turn off. 
OVER TEMP •  Blinks red when the unit’s internal temperature nears the safe limit. The 
inverter will automatically derate its maximum power rating to try to 
maintain a safe operating temperature. 
•  Glows red when the inverter is too hot to operate. The Bypass LED will 
also glow red and the Invert LED will turn off.
OVER LOAD •  Blinks red when the current being drawn reaches the unit’s continuous rating.
•  Glows red when the current being drawn reaches the unit’s peak rating. 
50 HZ •  Glows green if the inverter’s output frequency is set to 50.00 Hz. This 
setting can be changed using InverterWizard.
•  If the alarm sounds and both the 50 Hz and 60 Hz LEDs glow red. The unit 
is experiencing a ground fault and the Ground Fault Interruptor has shut 
down the unit.
60 HZ •  Glows green if the inverter’s output frequency is set to 60.00 Hz. This set-
ting can be changed using InverterWizard.
•  If the alarm sounds and both the 50 Hz and 60 Hz LEDs glow red. The unit 
is experiencing a ground fault and the Ground Fault Interruptor has shut 
down the unit.
BYPASS •  Glows green if the inverter is in Bypass mode and functioning as an Off-line 
Uninterruptible Power Supply. For more information, see Off-line UPS. 
•  Glows red when the inverter is experiencing a malfunction.
INVERT •  Glows green when the inverter operating normally.










