11
TROUBLESHOOTING
Error codes
If the products connected to the Backup Power System do not operate and the alarm is
sounding, check the Backup Power System LED screen for an error code.
Error
code
Possible cause
Solution
F05
Low voltage shutdown 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 Backup Power
System continuous power rating.
The AC products connected have a surge
power that exceeds Backup Power System
surge capability.
The AC products connected are
short-circuited
Use products with a total power rating
within Backup Power System
continuous power rating of 320 W.
Use products with a total starting surge
power within Backup Power System’s
capability of 800W.
Have the load serviced by a qualified
technician.
F03
Over-temperature shutdown has occurred.
The Backup 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
400 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
backup power is no longer required.
F02
Over-Voltage (voltage > 15.5 +/- 0.3 V)
Lower the voltage < 15.0 +/- 0.3 V
Other problem conditions
Problem
Possible cause
Solution
Backup Power
System will not
turn on.
Battery is discharged
and utility power is not
available at the wall
outlet.
Ensure power is available at the wall outlet.
No power
available at the
120 V AC
AC outlet has been
overloaded or the circuit
breaker has tripped.
Reduce the number of products plugged into the
AC outlets. Check the circuit breaker at the back
the unit. If necessary, reset the breaker by