Troubles And Solutions - Njoy PWUP-OL300AT-AZ01B User Manual

6

Troubles and solutions

Problem
No indication and alarm
even though the mains
is normal.
The icon
and
flashing on LCD display
and alarm is sounding
every second.
Fault code is shown as
27 and the icon
is lighting on LCD
display and the alarm is
continuously sounding.
Fault code is shown
as 28 and the icon
is lighting on LCD
display and alarm is
continuously sounding.
24
Possible Cause
The AC input
power is not
connected well.
The AC input is
connected to the
UPS output.
The external or
internal battery
is incorrectly
connected.
Battery voltage
is too high or the
charger is faulty.
Battery voltage
is too low or
the charger is
faulty.
Solutions
Check if input
power cord is
firmly connected
to the mains.
Plug the AC input
to the AC input
correctly.
Check if all
batteries are
connected well.
Contact the
service center.
Contact the
service center.