Maruson Tacoma II Series, User Manual

Page: 43 / 52

43
Conditions Possible cause Action
Bypass mode
Bypass (Orange) LED is
on.
Code: E060 An overload or a fault has
occurred, or a command has
been received and the UPS is in
Bypass mode Equipment is powered but not
protected by the UPS.
Check for one of the following
alarms: over temperature, overload
or UPS failure.
Power overload
Fault (Red) LED is Flash
2beep every 1 second
Code: A041 Power requirements exceed the
UPS capacity 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.
UPS over temperature
Fault (Red) LED is On.
Beep continuous.
Code: F081 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. 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.
ON Maintenance Bypass
Bypass (Orange) LED is
on.
Code: A072 UPS was manually commanded
to switch to bypass and will
remain in bypass until
commanded out of bypass Check the maintain bypass switch
status
In HE Mode
Line (green) LED is on.
Code: E063 The UPS is on bypass while
operating on the High Efficiency
setting. The equipment transferred to
bypass utility power as a normal
function of High Efficiency
operation. Battery mode is available
and your equipment is protected.
Site Wiring Fault
Fault (Red) LED is flash
1beep every 1 second
Code: A004 Site Fault detection is supported
on all models anytime there is a
Grounding Neutral connection.
Alarm triggers when the
difference between ground and
neutral voltage is > 15v. Site Fault detection should be
enabled by default. It can still be
enabled / disabled from the LCD
settings menu.
Reconnect all input wires.