26
Manual
www.kraun.it
note: when UPS has fault, it is convenient for you to know the working status of UPS
and the exact information about the fault promptly by referring to the two tables listed
above.
7.2. tROUbLeShOOting
when the fault occurs, firstly, perform troubleshooting by referring to the troubleshooting table. If the
fault still exists, please contact the franchiser.
fault
cause
solution
The “InPUT” letters on
lcD display section
flashes
The voltage or frequency of
mains power exceeds UPS
input range
UPS is working in battery mode, save
disk and close the programs, make sure
ac mains voltage and frequency is in the
normal range
anti-connection of mains
live and neutral
Re-connect the input power cable and
make a correct connection
Battery capacity
indicator flashes
Battery low voltage or
battery disconnected
check UPS battery, connect battery well, if
battery damaged, replace it
mains normal, but UPS
has no input
UPS input breaker open
circuit
Press the breaker for reset
Short back up time
Battery not fully charged
keep UPS connecting with mains power for
more than 8 hours, recharge battery
UPS overload
check the usage of loads, remove some
redundant devices
Battery aged
when replace battery, contact franchiser to
get battery and relative assembly
UPS doesn’t startup
after pressing the on
key
Short holding time
Press and hold the on key for more than 1s
to start UPS
UPS has no battery
connected or battery
voltage low and too many
loads connected
connect UPS battery well, if battery voltage
low, please turn off UPS and take off some
loads, then start UPS
fault occurs inside UPS
contact supplier for servicing
The icon of charger
status on lcD display
flashes and buzzer
beeps once per second
charger doesn’t work
normally or battery aged
contact supplier for servicing
