Troubleshooting guide

6. Testing the batteries

8. Turn off the UPS without utility power supply in Battery mode

9. Muting the buzzer

10. Operation in warning status

11. Operation in fault mode

12. Changing battery numbers

7. Turn off the UPS with utility power in AC mode

To check the battery status when the UPS is running in AC mode/CVCF mode/ECO mode, press the Test button to

initiate the self-test.

To maintain the system reliability, the UPS will perform the battery self-test automatically on a periodic basis. The default

setting for the battery self test is once per week.

Battery self-test interval can also be set through the monitoring software.

If the UPS is in battery self-test Mode, the LCD Display and buzzer indication will be the same as in battery mode, except

that the battery LED is flashing.

Turn off the UPS by pressing the OFF button for at least 0.5 second. The buzzer will beep once.

The UPS power will shut off output and there will be no indication showing on the display panel.

To silence the buzzer, press the Mute button for at least 0.5 second. If you press it again, the buzzer will be enabled.

Some warning alarms cannot be muted unless the error that triggered them is fixed.

When the Fault LED flashes and the buzzer beeps once every second, it means that the UPS is experiencing operation

issues. Fault Codes are available via the LCD Panel. Refer to the Trouble Shooting table for additional details.

Some warning alarms cannot be muted unless the error that triggered them is fixed.

When the Fault LED illuminates and the buzzer beeps continuously, it means that there is a fatal error in the UPS. Fault

Codes are available via the LCD Panel. Refer to the Trouble Shooting table for additional details.

Check the loads, wiring, ventilation, utility, battery and so on when a fault occurs. Do not try to turn on the UPS again

before solving the problems. If the issues persist, contact the dealer or service personnel immediately.

In case of emergency, disconnect the UPS from the utility, external battery, and output immediately to avoid danger.

This operation should only be performed by trained and qualified technicians.

Turn off the UPS. If the load cannot be shut down, remove the cover from the maintenance bypass switch on the rear

panel of the unit, and slide the maintenance switch to the BPS position.

Switch off the input breaker.

Remove the UPS cover. Modify the jumper on the control board to set the battery numbers and disconnect the battery

wire. After completing the changes, replace the UPS cover.

Note: JP1 setting on the control board: Jumper placed on pins 5 & 6 and pins 7 & 8 for 20 pieces of batteries. Jumper

placed on pins 5 & 6 or pins 7 & 8 for 19 pieces of batteries. Keep every pin open for 18 pieces of batteries.

Turn off the inverter of the UPS by pressing the OFF button for at least 0.5 second. The buzzer will beep once and the

UPS will go into Bypass mode.

Note 1: If the UPS has been set to enable the bypass output, it will bypass voltage from utility power to the output

terminal even though the UPS (inverter) has been turned off.

Note 2: After turning off the UPS, please beware that the UPS is operating in Bypass mode and there is a risk of power

loss for connected devices.

In Bypass mode, output voltage of the UPS is still present. In order to shut off the output voltage, switch off the input

breaker to the UPS. A few seconds later, there will be no display shown on the LCD panel while the UPS is now

completely turned off.