Chapter 5 : Troubleshooting - Delta Amplon Series User Manual

When an error occurs, please follow the table below to solve the according
issues.
Symptom
No indication and
alarm even though
the mains is normal.
The icons
are flashing on the
LCD display and the
alarm is sounding
every second.
Error code 27 or 28 is
shown and the icon
is lighting on the
LCD display and the
alarm is continuously
sounding.
The icons
are flashing on
the LCD display and
the alarm is sounding
twice every second.
Amplon N Gen3 Series

Chapter 5 : Troubleshooting

Possible Cause
The AC input power is not
connected well.
The AC input is connect-
ed to the UPS output.
and
The external or internal
batteries are incorrectly
connected.
Battery voltage is too
high/low or the charger is
fault.
The UPS is overloaded.
The UPS is overloaded.
Devices connected to the
and
UPS are fed directly by
the electrical network via
the bypass.
After repetitive overloads,
the UPS is locked in by-
pass mode. Connected
devices are fed directly
by the mains.
25
Remedy
Check if the input
power cord firmly
connected to the
mains.
Plug the AC input
power cord to the AC
input correctly.
Check if all batteries
are connected well.
Contact your local
dealer or customer
service.
Remove excess loads
from the UPS output.
Remove excess loads
from the UPS output.
Remove excess loads
from the UPS output
first. Then shut down
the UPS and restart
it.