User’s manual 19 UPS EVO TM
13. TROUBLESHOOTING
Following are described some functioning anomalies and relating solutions:
UPS doesn’t lights on without giving any information
• Check if main switch on the rear is in ON position.
UPS continues to function in BATTERY mode also if AC input line is
present at the input
• Make sure that is present AC input line at the input of the UPS and that AC input line
voltage amplitude is inside specified ranges.
• Before making following operations turn off the UPS, positioning main switch
on the rear side on OFF, and removing AC input line at UPS input.
• Check all input line cables.
• Check connections to IN/OUT terminal blocks.
OVERLOAD indication on the UPS
• Check UPS powered devices and if UPS is really overloaded.
• Report power request in specified range disconnecting devices that generates overload.
UPS POWERED DEVICES DOESN’T LIGHTS ON
• Before making following operations turn off the UPS, positioning main switch
on the rear side on OFF, and removing mains voltage at UPS in.
• Check connections with in/out terminal blocks.
• Check for every single connection cable state.
Overload thermic protection or inverter fault
The anomaly condition is highlighted by:
• FAULT led lighting on and continuos acoustic alarm signal
Make the following operations:
• Deactivate the INVERTER the OFF button.
• Disconnect all loads at the UPS output.
• Reactivate the INVERTER pressing the ON button.
• Check that UPS EVO TM is functioning regularly in LINE mode and the FAULT led off
(alarm disappeared).
• In event of alarm disappeared reconnect by degrees the output load, locating and
removing the ones generated alarm condition.
The UPS autonomy is less then specified
• Recharge batteries for at leas 10 hours and then check again their autonomy.