Unity I UT3K Manuel D'utilisation page 12

Table 2: Alarms
E
N
Alarm Alarm
G
Code
L
A-00 Low Runtime
I
S
H
A-01 Overload
A-02
Circuit Breaker
Warning/Shutdown*
High Ambient
A-03
Temperature
A-04 Check Battery
A-05 Check Inverter
A-06
Memory Error
A-07 High Battery
* In this case, "Circuit Breaker" does not refer to the circuit breaker(s) on the output receptacles panels of some UNITY/I
models. Instead, the alarm refers to the UPS' software-controlled overcurrent protection, which operates like a circuit
breaker.
What It Means
The UPS is running on battery
power and the runtime remaining
is low. (At the factory, the UPS is
programmed to sound this alarm
when 2 minutes of runtime are
left). The UPS display switches
between the alarm code (a-00)
and the estimated runtime.
Your equipment is drawing more
power than the UPS is designed
to provide.
There is a high output
current from the UPS. This
usually happens because the
equipment connected to the UPS
is overloading it.
The temperature inside the UPS
is high.
The UPS has detected a possible
problem with the batteries.
The UPS has detected a possible
problem with the inverter.
On startup, the unit has failed its
automatic memory test.
Battery voltage is too high. There
may be a problem with the
parameter settings, batteries, or
charging current.
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What to Do
Do an orderly shutdown of your equipment. You do
not need to shut off the UPS. The UPS will
automatically shut itself down, but it will leave its
microprocessor on. This means that when adequate
AC input power returns, the UPS can automatically
restart and begin to recharge its batteries (unless you
have set Parameter 03 to disable the auto restart
feature).
Press the [%LOAD] key. Shut off the equipment
connected to the UPS one piece at a time until the
%LOAD display shows 100 or less. Remove the
equipment that you shut off. If you need help, call
Best Power's Worldwide Service or the nearest Best
Power office.
The UPS will shut down. Shut off all of the
equipment connected to the UPS. Then, restart the
UPS by holding down the [CANCEL] key for two
seconds. Next, press the [%LOAD] key. Then, watch
the %LOAD display as you switch on the load
equipment one piece at a time. Once the %LOAD
reaches "100," the unit is fully loaded and you should
not start any additional equipment connected to the
UPS. If you need help, call Best Power's Worldwide
Service or the nearest Best Power office.
If you can identify a source of heat outside of the
UPS (such as an unusually high room temperature),
correct the cause of the high temperature. Also, make
sure that nothing outside the UPS is blocking the
vents on the front and back of the unit. If the alarm
continues, phone Best Power's Worldwide Service or
the nearest Best Power office.
Phone Best Power's Worldwide Service or the nearest
Best Power office. If you have an external battery
cabinet, first make sure that the DC switch on the
battery cabinet is switched on.
Phone Best Power's Worldwide Service or the nearest
Best Power office.
Shut the unit down and restart it. If the alarm sounds
again, hold down the Cancel key for about 3 seconds.
If the alarm does not stop, phone Best Power's
Worldwide Service or the nearest Best Power office;
the UPS must be recalibrated.
Phone Best Power's Worldwide Service or the nearest
Best Power office.