15
②
Overload in line mode.
Note: When UPS is working in bypass mode, it has no back up function.
4.2 Line mode
LED indications on front panel in line mode are as following: The inverter green LED is on.
When input AC mains correspond to the working conditions, UPS will work in line mode.
4.3 Battery mode
LED indications on front panel in battery mode are as following: both the inverter green LED and battery
yellow LED is on, the buzzer beeps once every 4 seconds. The warning red LED will be on while beeping.
When the mains power is low or unstable, UPS will turn to battery mode at once.
4.4 ECO mode
LED indications on front panel in ECO mode are as following: both the inverter green LED and bypass yellow
LED are on.
When the input mains meets the input range of the ECO mode and the ECO function is on, the UPS will
works in ECO mode. If input AC mains exceed the range of ECO several times within one minute but stays in
inverter input range, UPS will work in AC inverting mode automatically.
4.5 Fault mode
LED indications on front panel in Fault mode are as following: warning red LED is on and LCD display fault
code and related icon.
Fault mode (LCD interface on which the fault code display)
When UPS has faulted. The warning LED is on and the buzzer beeps. UPS will turn to fault mode. UPS cuts
off the output and LCD display fault codes. At the moment, you can press the mute key to make the buzzer
stop beeping temporarily to wait for maintenance. You can also press the OFF key to shut down the UPS
when confirmed that there is no serious fault.
5. The warning code list of the LED light and display panel
