Minuteman UPS XRT Series - Manual (Page 30)

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INITIAL ERROR MESSAGES
As soon as the UPS is first turned on, it performs a series of self tests. If
the self tests fail then the UPS will report the failure and display the fault.
If the self test passes, but the UPS was shut down previously due to a
fault, the previous fault code or message will be displayed. This feature
allows you to determine why the UPS shut down. The LCD screen will
display the words “Error Detected” on the top line of the screen, and one
of the messages in the Error Code list is shown on the second line.
Model XRT600 LED Display Error Codes
Displayed in binary code
LED
DISPLAY POSSIBLE CAUSE ACTION TO TAKE
ooox Low ac input Verify incoming ac
ooxo Input ac to high Verify incoming ac
ooxx Input AC frequency out of
range for unit.
Verify incoming freq. for this
model.
oxoo Excessive output current
being drawn
Verify output load
matches unit.
oxox Fan not running Verify nothing has
gotten into the fan
oxxo Fan or air
passages blocked
Clear air passages
oxxx Battery pack is bad or
disconnected
Check battery voltage
and connections
xooo UPS has had a
hardware fault
Call for service
xoox Output voltage
is too high
Call for service
xoxo Output voltage
is too low
Call for service
On the XRT600, these messages can be cleared by pressing the
Test/Alarm Silence button.