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available battery
power.
Products
connected to unit
malfunction or
overheat.
Products connected
to the power system
do not accept
modified sine wave
form.
Your application is not compatible with the power
system
’s modified sine wave output.
Inadequate run
time.
Power system
’s
battery is not fully
charged.
Charge the battery by leaving the power system plugged
into a wall outlet at least 15 hours
As the battery ages, the available run time decreases.
The internal battery also ages prematurely if the power
system is installed in a hot environment or not kept in a
charged condition.
Error Codes
If the products connected to the power system do not operate and the alarm is sounding, check the
unit’s LED screen for an error code.
Error Code
Possible Cause
Solution
F05
Low voltage shut-down
because battery is discharged.
Recharge battery by plugging the
AC power cord into a wall outlet.
F04
Overload shutdown while
supplying backup power. The
AC product(s) connected are
consuming more than the
power system
’s continuous
power rating.
The AC products connected
have a surge power that
exceeds the power system
’s
surge capability.
The AC products connected are
short-circuited
Use products with a total power
rating within the power system
’s
continuous power rating of 1440 W.
Use products with a total starting
surge power within the power
system
’s capability of 3000 W.
Have the load serviced by a
qualified technician.
F03
High-temperature shut-down
has occurred. The power
system has overheated due to
poor ventilation, excessive
ambient temperature, or power
demand beyond the unit’s five-
minute output power capability.
Disconnect products from the AC
outlets. Allow the unit to cool for 20
minutes. Clear blocked fan or
remove objects covering unit. Move
the unit to a cooler place. Reduce
load to less than 1800 W if
continuous operation is required.
F01
Under-voltage warning. The
battery is nearly discharged.
Reduce the load to extend run time,
or recharge battery by plugging the
AC power cord into a wall outlet
when back-up power is no longer
required.
F02
Over-Voltage (voltage > 15.5
+/- 0.3 V)
Lower the voltage < 15.0 +/- 0.3 V
