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54
Bypass mode
Bypass (Orange) LED
is on.
Code: 169
Power overload
Fault (Red) LED is
Flash
2beep every 1 second
Code: 25
UPS over
temperature
Fault (Red) LED is On.
Beep continuous.
Code: 73
ON Maintenance
Bypass
Bypass (Orange) LED
is on.
Code: 144
An overload or a fault
has occurred, or a
command has been
received and the UPS
is in Bypass mode
Power requirements
exceed the UPS
capacity
The UPS internal heat
sink temperature is
too high or a fan has
failed.
At the warning level,
the UPS generates
the alarm but
remains in the
current operating
state.
If the temperature
rises another 2°C, the
UPS transfers to
Bypass mode or
Standby mode.
UPS was manually
commanded to
switch to bypass and
will remain in bypass
until commanded out
of bypass
Equipment is
powered but not
protected by the
UPS.
Check for one of the
following alarms:
over temperature,
overload or UPS
failure.
Remove some of the
equipment from the
UPS.
The UPS continues to
operate but may
switch to Bypass
mode or shut down if
the load increases.
The alarm resets
when the condition
becomes inactive.
Clear vents and
remove any heat
sources. Allow the
UPS to cool. Ensure
the airflow around
the UPS is not
restricted. Restart
the UPS.
If the condition
continues to persist,
contact your service
representative.
Check the maintain
bypass switch status
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