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8. Troubleshooting
The UPS is designed for durable, automatic operation and also alert you whenever
potential operating problems may occur. Usually the alarms shown by the control panel
do not mean that the output power is affected. Instead, they are preventive alarms
intended to alert the user.
Events are silent status information that are recorded into the Event log. Example =
"Battery charging".
Alarms are recorded into the Event log and displayed on the LCD status screen with
the logo blinking. Some alarms may be announced by a beep every 1 second.
Example = "Battery low".
Faults are announced by a continuous beep and red LED, recorded into the Event
log. Example = Out. short circuit.
Use the following troubleshooting chart to determine the UPS alarm condition.
8.1
Typical alarms and faults
To check the Event log:
1. By pressing
on the menu of “Event log”.
2. Scroll through the listed events or faults.
3. The following table describes typical conditions.
WARNING
Problem Displayed
Possible cause
Remedy
On Maintain Bypass
Maintain bypass switch is open
Check the maintain bypass switch
status
Site Wiring alarm
Phase and neutral conductor at
input of UPS system are reversed
Reverse mains power wiring.
No battery
Battery pack is not connected
correctly
Do the battery test to confirm.
Check the battery bank is properly
connected to the UPS.
Check the battery breaker is turn on or
fuse OK.
Battery low
Battery voltage is low
When audible alarm sounding every
second, battery is almost empty.
End battery life
The battery has reached the end
of its life
Consult dealer if replace the battery
Power overload
Power requirements exceed the
UPS capacity
Check the loads and remove some
noncritical loads.
Check if some loads are failed
Overload pre-alarm
The load exceeds the preset
value
Check the loads or reset the pre-alarm
value
Fan Lock
Fan abnormal
Check if the fan is running normally or
fan detection cable disconnected
