User manual

Alarm Message What It Means What to Do
15
Fan fault If the fan monitoring option is installed, this
alarm sounds if one or more of the fans are
slowing down. The unit’s status does not
change, but the problem may cause other
high-temperature alarms that could change
the unit’s status.
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Fatal Error RAM1 data
error
Components on the main controller board
have failed.
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Fault in int. power
supply
There is a fault in the internal power supply
unit (PSU). UT3120-UT3220 models do not
change status because they have a redundant
power supply. Standard UT310-UT3100
models transfer to standby and
do not supply
output voltage
; these models come with one
power supply, but you can order multiple
power supplies as an option.
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High Battery
Temperature
The ambient battery temperature is higher
than the set alarm level. The unit’s status
does not change, but battery life could be
affected. This alarm is often caused by high
room temperature.
Make sure the room temperature is below
80 F (27 C). If not, cool the room. If
the temperature was below 80 F (27 C)
when the alarm sounded, find the exhaust
vents for the UPS fans and check to see if
the fans are operating.
Do not try to
open the unit, and do not insert
anything into a fan vent.
If the fans are
not operating, call BEST’s Worldwide
Service.
High DC Warning The monitored battery voltage is higher than
the unit’s shutdown setpoint.
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High DC Shutdown The monitored battery voltage is higher than
the unit’s shutdown setpoint. The unit will
switch to battery power to reduce DC bus
voltage.
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High output voltage
(This alarm is usually
only listed in the events
log.)
The output voltage is higher than the alarm
setpoint. The unit stays in the normal
operation mode. If the alarm is not cleared,
the unit will transfer to static bypass
operation if bypass is within tolerance (see
the Glossary). If bypass is not within
tolerance, the unit will transfer to standby and
will not supply output voltage.
If the alarm is still active, put the UPS
into bypass by displaying the user
parameters and changing “Bypass
Operation” to “ON.” (See Section 205.)
Then, call BEST’s Worldwide Service.
High temp. choke The temperature in the main choke is too
high. If the problem is not corrected soon, the
unit will transfer to battery operation.
Find the exhaust vents for the UPS fans
and check to see if the fans are operating.
Do not try to open the unit, and do not
insert anything into a fan vent.
If the
fans are not operating, call BEST’s
Worldwide Service.